Early this morning Tamron announced the G2 version of a lens I own and love, the 15-30mm f/2.8. I can't wait to get my hands on the latest version of this fast, full-frame ultra-wide zoom and compare the two. While the greatest benefits from such a lens come when it's attached to a full-frame camera, the view isn't so bad with an APS-C sensor, at roughly 24-45mm. Available for Canon and Nikon. Here is the full body of the press release. (Pricing and availability: $1299, first in Nikon mount, then Canon - see below.)

August 31, 2018, Commack, New York- Tamron announces the launch of a new high-speed ultra-wide-angle zoom lens, the SP 15-30mm F/2.8 Di VC USD G2 (Model A041), for full-frame DSLR cameras. The new model will be available in Nikon mount on September 21st and in Canon mount October 12th at a suggested retail price of $1299.
 
With a well-established reputation for ultra-high-quality wideangle zoom lenses with its Model A012, Tamron carries on the tradition of high optical performance with the new SP 15-30mm F/2.8 Di VC USD G2 (Model A041). By incorporating an XGM (eXpanded Glass Molded Aspherical) lens element, as well as multiple LD (Low Dispersion) lens elements, the distortion and lateral chromatic aberrations so common in wideangle shooting have been greatly minimized. Furthermore, a newly developed AX (Anti-reflection eXpand) Coating has been applied to reduce ghosting and flare more thoroughly than ever before. The optical performance in this high-speed F/2.8 ultra-wideangle zoom lens is outstanding. In addition, the built-in Dual MPU (Micro-Processing Unit) enables vastly improved AF speed and precision and image stabilization. This is a next-generation super high-quality, high-speed ultra-wideangle zoom lens with first-rate optics and a wide range of features that serve to revitalize the user's shooting experience. With the release of this model, three[1] of Tamron's high-speed F/2.8 zoom lens with VC (Vibration Compensation) are now G2 (Generation 2).
 
[1]SP 15-30mm F/2.8 Di VC USD G2 (Model A041), SP 24-70mm F/2.8 Di VC USD G2 (Model A032), SP 70-200mm F/2.8 Di VC USD (Model A025)


PRODUCT HIGHLIGHTS

1. Super high-quality high-speed ultra-wideangle zoom lens
The Model A041 is an F/2.8 ultra-wideangle lens with a focal length starting at 15mm that offers high resolution even in the peripheral area of the image. By incorporating an XGM (eXpanded Glass Molded Aspherical) lens element and multiple LD (Low Dispersion) lens elements to curtail distortion and lateral chromatic aberrations, Tamron has achieved a degree of resolution throughout the range that is just as good as a fixed focal length lens.
 
2. Newly developed AX Coating
The AX (Anti-reflection eXpand) Coating, especially effective for wideangle lenses that tend to let in harmful light from peripheral areas, was developed to control rays that affect image quality. It is a revolutionary new proprietary coating developed in-house by Tamron using specialized deposition technology. The new coating keeps the reflection factor for peripheral areas at the same high level as that for the center area, not only overcoming standard curvature issues, but even overcoming the problems of conventionally produced convex surface with large curvatures for which uniform deposition has always proved difficult to achieve. Furthermore, the Model A041, along with eBand (Extended Bandwidth & Angular-Dependency) Coating utilizing nanotechnology, and BBAR (Broad-Band Anti-Reflection) Coating, makes effective use of three different types of coatings, thereby enabling unsurpassed curtailment of ghosting and flare and consequently enabling superlative, exceptionally clear image quality edge to edge.
 
3. High-speed, high-precision AF
Superb AF speed and precision is delivered by equipping the lens with a Dual MPU (Micro-Processing Unit)system and employing an enhanced AF control algorithm to improve performance. The AF drive uses proprietary Tamron technology, USD (Ultrasonic Silent Drive), enabling high torque, high response, and silent operation. And because it comes with a Full-time Manual Focus override system, manual focus adjustments can be made on the fly.
4. VC promises sharp images for all varieties of shooting
Tamron released the first high-speed F/2.8 ultra-wideangle zoom lens in the world equipped with a VC (Vibration Compensation) mechanism, the original Model A012. The new Model A041 has been further improved with a newly developed VC mechanism that surpasses former versions and reaches 4.5 stops[2], according to CIPA standards. This makes it possible to shoot sharp photos over a wide range of photographic scenes, including indoor and outdoor shots as well as handheld shots at stopped-down aperture settings for landscape photography.
 
5. Rear filter holder
The Model A041 made for use on Canon (EF-mount) cameras comes with a filter holder as a standard feature that lets you insert gelatin and other sheet filters into the rear side of the lens. This makes photography using filters much easier and simpler by overcoming the problem of the curvature of the front lens elements that made shooting with filters so difficult in the past.
 
6. Vastly improved highly durable Fluorine Coating
Abrasion resistance capability has been vastly improved on the new Model A041. The front surface of the lens element is coated with a Fluorine Coating based on a newly developed fluorine compound with high water- and oil-repellent properties. The lens surface is easier to wipe clean and is less vulnerable to the damaging effects of dirt, dust, moisture, and fingerprints, and enabling your important lenses to be continually protected on a long-term basis.
 
7. The new design provides greater operability and design consistency
With the new SP design applied, Model A041 shares the same feel of high quality and operability as the other two models in this series, SP 24-70mm F/2.8 Di VC USD G2 (Model A032) and SP 70-200mm F/2.8 Di VC USD G2 (Model A025). Tamron has merged beautiful craftsmanship with intuitive design in this new high-speed ultra-wideangle zoom lens. Even details like the shape of the switch box, distance-scale window, and the precision and stability of the metallic mount reveal a commitment to functionality, as well as design. The result is a next-generation lens that's easy to use yet loaded with cutting-edge technology.
 
8. Compatible with TAMRON TAP-in ConsoleTM, an optional accessory
The new Model A041 is compatible with the TAMRON TAP-in Console, an optional accessory product that provides a USB connection to a personal computer for easy updating of the lens's firmware as well as customization of features including fine adjustments to the focus position of AF and VC control.
 
 9. Moisture-Resistant Construction
Seals are located at the lens mount area and other critical locations to prevent infiltration of moisture and/or rain to provide Moisture-Resistant Construction. This feature affords an additional layer of protection when shooting outdoors under adverse weather conditions.
 
10. Manufacturing innovation with thorough attention to details based on the rigorous quality standards worthy of the SP series
Tamron has enhanced the SP series lenses to fulfill high-level photographic requirements and provide the pleasure of ownership. While introducing a new exterior design, Tamron reviewed the SP series standards. The new SP series has been developed by setting rigorous standards for design, manufacturing and quality that apply to the optical design and mechanical design as well as such wide-ranging areas as the product's robustness and improvements in a variety of individual functions. This has helped to achieve a more consistently superb optical performance, making it a lens that fulfills the demand for higher image quality that is compatible with the latest high-pixel cameras. To maximize the optical performance of the SP series, Tamron will continue to enhance the accuracy of the component parts of each lens element unit and improve the mechanical precision of the entire lens, thereby achieving a high overall performance.


[2]CIPA Standard Compliant. For Canon: EOS-5D MKIII is used. For Nikon: D810 is used.

SPECIFICATIONS
Model: A041
Focal Length: 15-30mm
Maximum Aperture: F/2.8
Angle of View (diagonal): 110°32' - 71°35'(for full-frame format); 85°52' - 49°54' (for APS-C format)
Optical Construction: 18 elements in 13 groups
Minimum Object Distance: 11.0 in.
Maximum Magnification Ratio: 1:5 (f=30mm)
Filter Size: N/A*
Maximum Diameter: Ø98.4 in.
Length**: for Canon 5.7 in.; for Nikon 5.6 in.
Weight: for Canon 39.2 oz.; for Nikon 38.8oz.
Aperture Blades: 9 (circular diaphragm)***
Minimum Aperture: F/22
Image Stabilization Performance: 4.5 stops (TELE) (CIPA Standards Compliant)
For Canon: EOS-5D MKIII is used / For Nikon: D810 is used
Standard Accessories: Integrated flower-shaped hood, Lens caps (push-on front, rear), Lens pouch
Compatible Mounts: Canon, Nikon

Specifications, appearance, functionality, etc. are subject to change without prior notice.
* A rear filter holder is available for Canon mount.
** Length is the distance from the front tip of the lens to the lens mount face.
***The circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture.

PRODUCT HIGHLIGHTS 
1．Sophisticated design delivers superb performance and ultra-high image quality
The use of specialized, high quality glass materials assures accurate color reproduction and superior sharpness, perfect for today's high-pixel-density cameras. The optical construction (17 elements in 12 groups) uses 2 XR (Extra Refractive Index) elements, 3 LD (Low Dispersion) elements, 3 GM (Glass-Molded aspherical) and one hybrid aspherical lens element. Together they minimize axial chromatic aberrations, transverse chromatic aberrations, spherical aberrations and distortion, and allow a compact design that achieves superior image quality.


2. eBAND Coating provides superior anti-reflection properties and reduces ghosting and flare
The new A032 features Tamron's original eBAND (Extended Bandwidth & Angular-Dependency) Coating, a technology combining a nano-structured layer that has an extremely low refractive index with conventional multiple-layer coatings to provide superior anti-reflection performance. The optimal application of this eBAND Coating in combination with Tamron's BBAR (Broad-Band Anti-Reflection) Coating successfully and substantially curbs the ghosting and flare that can occur when photographing backlit subjects.
 
3. New Dual MPU (Micro-Processing Unit) control system[3] provides faster and more precise autofocus and improved Vibration Compensation
This innovative control system uses a Dual MPU design with enhanced computing capacity. The MPUs have powerful, built-in DSP (Digital Signal Processor) blocks that achieve quicker and more precise AF performance, and more consistently powerful Vibration Compensation. The features combine to provide outstanding performance at night and in low light.


High performance MPU for AF dramatically improves autofocusing accuracy and speed
The A032 is equipped with its own MPU (micro-processor unit), with embedded DSP (Digital Signal Processor) blocks that enable high-speed digital signal processing, achieving both excellent responsiveness to signals from the camera and high-precision AF performance.


Dedicated MPU delivers the highest vibration compensation ability in class (CIPA level of 5 stops).
The new A032 is equipped with Tamron's proprietary VC (Vibration Compensation) system. Adding an MPU dedicated to VC processing unleashes a new-generation algorithm, ensuring the highest vibration compensation abilityin the class (CIPA level of 5 stops). Even in low light or with slow shutter speeds, photographers can enjoy shake-free handheld shooting with ease and comfort.


4. Fluorine Coating and Moisture-Resistant Construction
The Fluorine Coating applied on the front element surface is water-and oil-repellant and allows safe and easy removal of fingerprints, dirt and smudges. The coating also provides an enhanced level of durability, and will sustain its effectiveness for years. In addition, seals are located at the lens mount area and other critical locations to prevent infiltration of moisture and/or rain drops to provide Moisture-Resistant Construction. This feature provides an additional layer of protection when shooting outdoors under adverse weather conditions.


5. Lens hood equipped with a new, convenient locking mechanism
The lens hood is equipped with a locking mechanism that prevents detachment due to unintentional contact during use.


6. Compatible with TAMRON TAP-in ConsoleTM, an optional accessory
The new A032 is compatible with the optional TAMRON TAP-in ConsoleTM, an optional accessory product that provides a USB connection to a personal computer, enabling users to easily update the lens firmware as well as customize features including fine adjustments to the AF and VC.


7. Electromagnetic diaphragm system now used also for Nikon-mount lenses
An electromagnetic diaphragm system, which has been a standard feature for Canon-mount lenses, is now employed in Nikon-mount lenses[4]. More precise diaphragm and aperture control is possible because the diaphragm blades are driven and controlled by a built-in motor through electronic pulse signals.


8. Manufacturing innovationwith thorough attention to details based on the rigorous quality standards worthy of the SP series
Tamron has enhanced the SP series lenses to fulfill high-level photographic requirements and provide the pleasure of ownership. While introducing a new exterior design, Tamron reviewed the SP series standards. The new SP series has been developed by setting rigorous standards for design, manufacturing and quality that apply to the optical design and mechanical design as well as such wide-ranging areas as the product's robustness and improvements in a variety of individual functions. For this model, Tamron has introduced a unique MTF (Modulation Transfer Function) tester, which was developed exclusively for Model A032, and reviewed the management method. This has helped to achieve a more consistently superb optical performance, making it a lens that fulfills the demand for higher image quality that is compatible with the latest high-pixel cameras. To maximize the optical performance of the SP series, Tamron will continue to enhance the accuracy of the component parts of each lens element unit and improve the mechanical precision of the entire lens, thereby achieving a high overall performance.
​

[1] CIPA Standard Compliant. For Canon: EOS-5DMKIII is used. For Nikon: D810 is used.
[2]Among 24-70mm F/2.8 interchangeable lenses for DSLR cameras (as of May, 2017; Tamron)
[3] A new control system using two high-performance MPUs (micro-processor units) 
[4] Available only with cameras compatible with the electromagnetic diaphragm: (D5,D4s,D4,D3X,Df,D810,D810A,D800,D800E,D750,D600,D610,D300S,D500,D7200,D7100,D7000,D5600, D5500,D5300,D5200,D5100,D5000,D3400,D3300,D3200,D3100). (As of May, 2017; Tamron)

Tamron appears to be revamping their lenses at warp speed these days. They didn't wait long before updating their 90mm f/2.8 macro, and now they've done likewise with their 150-600mm super-tele zoom. Here are essential details from the press release.

September 1, 2016, Commack, New York – Tamron, a leading manufacturer of optics for diverse applications, announces the launch of the SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022). This second generation “G2” lens builds upon the success of the SP 150-600mm F/5-6.3 Di VC USD (Model A011), which launched in December 2013 and continues to successfully meet photographers’ needs in the ultra-telephoto category. The new G2 version was developed to provide superior optical performance with today’s high resolution DSLRs and to add improvements to several features including speed and accuracy of AF and VC (Vibration Compensation). Also, several new features have been added: FLEX ZOOM LOCK mechanism, Fluorine Coating and optional teleconverters. The new lens delivers outstanding performance and a luxurious, upscale appearance, including a metal lens barrel. Delivery of the new lens in Canon and Nikon mounts will start on September 23 in the Japanese market and soon thereafter in the U.S. market (Sony A-mount to be delivered at a later date) at a price of $1399.

​PRODUCT HIGHLIGHTS
 
1. Optical design refreshed to achieve even higher performance
Three LD (Low Dispersion) lens elements completely eliminate axial and transverse chromatic aberrations. The design also features an upgraded optical construction (21 elements in 13 groups) and leverages improvements in manufacturing technology. As a result, the lens delivers high resolution, improved sharpness and overall better performance.
 
2. Tamron’s sophisticated eBAND Coating for eliminating ghosting and flare
eBAND (Extended Bandwidth & Angular-Dependency) Coating is a nano-structured layer deployed on the lens element surface. In addition to regular anti-reflection coatings, eBAND Coating offers higher light transmission and significant improvement in anti-reflection characteristics, especially against angulated incident rays. Combined with BBAR (Broad-Band Anti-Reflection) coatings, flare and ghosting are reduced to imperceptible levels.
 
3. MOD reduced to provide optimum tele-macro photography
Tamron’s advanced manufacturing technology has made it possible to reduce the MOD (Minimum Object Distance) to 86.6 in (2.2m), compared to 106.3 in (2.7m) for Model A011, and has allowed for the wonders of tele-macro photography with its 1:3.9 Maximum Magnification Ratio.
 
4. AF speed is faster and much more responsive with moving subjects
The Model A022 is equipped with a USD (Ultrasonic Silent Drive) ring-type motor that delivers excellent responsiveness and control. AF speed is significantly improved from the current model, and it enables accurate high-speed focus even when capturing moving subjects.
 
When shooting with AF, the Full-time Manual Focus override allows you to instantly make fine-focusing adjustments manually, without having to switch between modes.
 
5. VC performance is now 4.5 stops and offers three modes optimized for different situations
The VC (Vibration Compensation) effectiveness is equivalent to 4.5 stops, based on image stabilization performance levels established by CIPA (Camera & Imaging Products Association) when using VC MODE 3. Model A022 now has three types of VC modes, and it is possible to choose the optimum VC mode according to the situation for taking a photograph, such as when panning.

• VC MODE 1 is the standard mode that strikes a great balance between the stability of the viewfinder image and the stabilization effects.
• VC MODE 2 is exclusively used for panning.
• VC MODE 3 prioritizes the stabilization of the captured images and forgoes the stabilization of the viewfinder image.

 
A new VC Mode can be programmed with the optional TAMRON TAP-in ConsoleTM. You can overwrite VC Mode 1 with a new VC Mode that allows stabilization to be engaged constantly for videography purposes. In this mode, the LCD screen is used.
 
6. New FLEX ZOOM LOCK mechanism enables locking of the zoom ring at any position
The FLEX ZOOM LOCK mechanism quickly locks or unlocks the zoom at any position simply by sliding the zoom ring. Photographers can shoot from any angle without the zoom extending unintentionally. Additionally, the lens features  the conventional Zoom Lock switch to prevent unwanted barrel extension during transportation.
 
7. Fluorine Coating and Moisture-Resistant Construction for a more user-friendly lens
The front surface of the lens element is coated with a protective fluorine compound that is water- and oil-repellent. The lens surface is easier to wipe clean and is less vulnerable to the damaging effects of dirt, dust, moisture and fingerprints. For greater protection when shooting outdoors, leak-proof seals throughout the lens barrel help protect your equipment.
 
8. Electromagnetic diaphragm system now used for Nikon-mount lenses
An electromagnetic diaphragm system, which has been a standard feature for Canon-mount lenses, is now employed in Nikon-mount lenses[1]. More precise diaphragm and aperture control is possible because the diaphragm blades are driven and controlled by a motor through electronic pulse signals.
 
9. Lightweight and easy-to-hold tripod mount is compatible with an Arca-Swiss style quick release plate
A new textured grip and Arca-Swiss style tripod interface enhances both speed and utility. And because the tripod mount is made of lightweight magnesium, it is much easier to carry.
 
10. Compatible with TAMRON TAP-in ConsoleTM, an optional accessory product
The optional TAP-in Console provides a USB connection to your personal computer, enabling you to easily update your lens’s firmware as well as customize features including fine adjustments to the AF and VC.


[1] Available only with cameras compatible with the electromagnetic diaphragm (D3100, D3200, D3300, D5000, D5100, D5200, D5300, D5500, D7000, D7100, D7200, D300, D300s, D600, D610, D700, D750, D800, D800E, D810, D810A, D3x, D3s, D4, D4s, Df, D500, D5). (As of September 1; Tamron)

12. Based on the rigorous quality standards worthy of the SP series, this new lens is manufactured with thorough attention to details
For the SP series products in particular, Tamron has established rigorous design and quality standards. These standards apply to the optical design, mechanical design and the cosmetic appearance, as well as to such wide-ranging areas as the product’s robustness and improvements in various individual functions. Tamron thoroughly ​reviews of all of the design and manufacturing processes in order to offer products to customers with ever-higher precision and quality levels.
 
For the SP 150-600mm G2 (Model A022), the optical design was refreshed, mechanical parts were improved and a new exterior design was adopted. To maximize the optical performance intrinsic to this product, Tamron improved the accuracy of component parts and increased the precision of the overall zooming mechanism.
 
Design Concept
The new design adopted for the four SP series lenses already on the market is essentially the fusion of engineering and style, the pursuit of functional beauty and craftsmanship achieved by giving meticulous attention to minute details. Using metal as the exterior material creates a high-grade design based on the concept that emphasizes “Human Touch” characteristics, and significantly improves user-friendliness. The SP models feature a novel design for the switches, easy-to-read characters, an enlarged window over the distance scale and the adoption of organic forms easy for the photographer’s fingers to hold onto.
 
This design philosophy—the pursuit of functional beauty with a “Human Touch”—is applied even to the most minute details of the new SP 150-600mm G2 (Model A022) ultra-telephoto zoom. By using metal for the exterior material and adding new functions such as the FLEX ZOOM LOCK mechanism, the Model A022 achieves a size and weight that makes comfortable handheld shooting possible, with a slim and stylish appearance design to top it all off. 

SPECIFICATIONS
 
Model                                             A022
Focal Length                                  150-600mm
Maximum Aperture                         F/5-6.3
Angle of View (diagonal)                 16°25' - 4°8' (for full-frame format)
                                                    10°38' - 2°40' (for APS-C format)
Optical Construction                        21 elements in 13 groups
Minimum Object Distance                86.6 in
Maximum Magnification Ratio           1:3.9
Filter Size                                       Ø95mm
Maximum Diameter                         Ø108.4mm
Length[1]                                       for Canon 10.2 in / for Nikon 10.1 in
Weight[2]                                       for Canon 70.9 oz / for Nikon 70.2 oz (incl. detachable tripod mount)
Aperture Blades                              9 (circular diaphragm[3])
Minimum Aperture                          F/32-40
Image Stabilization Performance      4.5 stops (using VC Mode 3)
                                                      CIPA Standards Compliant
                                                      (For Canon : EOS-5D Mark III is used / For Nikon : D810 is used)
Standard Accessories                      Lens hood, Lens caps, Lens case
Compatible Mounts                         Canon, Nikon, Sony A-mount[4]
 
 
Specifications, appearance, functionality, etc. are subject to change without prior notice.


[1] Length is the distance from the front tip of the lens to the lens mount face.

[2] Weight includes the weight of the detachable tripod mount

[3] The circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture.

[4] The Sony mount model does not include VC, since the bodies of Sony DSLR cameras include built-in image stabilization functionality.

​11. Teleconverters exclusively for the Tamron lens now developed
Two exclusive teleconverters[1], which perfectly match the optics of the new SP 150-600mm G2 (Model A022), offer 1.4x and 2x magnification, and provide a maximum zoom range up to 1200mm. These new teleconverters extend focal length of the master lens, making it possible to take pictures in farther ultra-telephoto ranges.
 
*1 Autofocus functions normally on any camera that offers F/8 autofocusing (see your camera’s instruction manual for your camera’s ability).
*2 Subjects with low contrast and/or luminosity values can sometimes result in out-of-focus images.

For more information, please visit Tamron's website: www.tamron-usa.com

Tamron teased us with an earlier announcement about this lens, but now it's a reality and promises to be a game-changer (currently for Canon and Nikon users; Sony version to come at a later date). Just imagine shooting landscapes with a 15-30mm image-stabilized zoom lens. The possibilities are endless! I can't wait to get my hands on this lens for a field test. I'll likely end up buying it. I just love Tamron lenses! Here's the full press release.

January 23, 2015, Commack, New York- Tamron, a leading manufacturer of precision optics, announces the release of a groundbreaking F/2.8 ultra-wide-angle zoom lens for full-frame DSLR cameras. The Tamron SP 15-30mm F/2.8 Di VC USD (model A012) is the only zoom lens in its category to feature image stabilization. The lens will be available starting January 30, 2015 at $1199.   

Since 2012, Tamron has been expanding its lineup of interchangeable lenses for full-frame DSLR cameras. The Tamron SP 24-70mm F/2.8 Di VC USD (Model A007) was the world's first F/2.8 high-speed standard zoom lens to include image stabilization, followed by the development of the unique SP 70-200mm F/2.8 Di VC USD (Model A009), SP 90mm F/2.8 Di MACRO 1:1 VC USD (Model F004), and SP 150-600mm F/5-6.3 Di VC USD (Model A011) lenses, all of which have been highly acclaimed among the photo enthusiasts around the globe. Now, we have developed SP 15-30mm F/2.8 Di VC USD (Model A012) to expand the world of imaging possibilities in the wide-angle range.

Product Highlights

1. Superior, class leading imaging performance using an innovative XGM lens element
With an optical construction consisting of 18 elements in 13 groups, including, for the first time, an XGM (eXpanded Glass Molded Aspherical) lens element placed in the front group, and several Molded-Glass Aspherical elements and LD (Low Dispersion) elements used throughout the optical system, aberrations such as geometrical distortion and lateral color are efficiently corrected enabling the zoom lens to deliver outstanding image quality throughout its entire zoom range from corner to corner.

2. Enhanced sharpness with exclusive VC image stabilization when shooting handheld in low light or at night
In response to popular demand, Tamron has created the world's first F/2.8 ultra-wide-angle zoom lens with VC (Vibration Compensation)*4. The VC allows shooting at slow shutter speeds and in low light conditions, and effectively compensates for minor camera shake, whilst maintaining class leading optimal performance.

3. eBAND Coating provides superior anti-reflection properties
In addition to further optimizing Tamron's acclaimed BBAR (Broad-Band Anti-Reflection) Coating, the eBAND (Extended Bandwidth & Angular-Dependency) Coating has also been employed in this lens. This combination offers superior anti-reflection properties especially important in ultra-wide-angle lenses which are particularly susceptible to flare and ghosting due to their wide angle of view, and provides superior quality and crystal-clear images by minimizing unwanted light reaching the sensor.

4. 15-30mm zoom covers both ultra-wide and semi-wide-angle focal lengths
At its ultra-wide-angle settings this lens can capture, in a single photograph, broad landscapes that cannot be taken in fully by the human eye. At its semi-wide-angle focal lengths, it's ideal for travel and street photography. In short, this unique lens utilizes the zoom function to provide maximum shooting flexibility with a wide range of subjects.

5. Fascinating background "bokeh" throughout the wide-angle range due to its fast constant F/2.8 aperture
Utilizing its shallow depth of field at F/2.8, it enables users to capture beautiful bokeh effects even at wide coverage angles. Its advanced optical formula and 9-bladed circular diaphragm are designed with defocused photography in mind - perfect for creating images where subjects stand out from their natural, blended backgrounds.

6. Proven fluorine coating utilizing Tamron's industrial lens expertise is used on the front element
Fluorine coating, with an established track record in Tamron's industrial lenses, such as those used in automotive cameras, has been applied to the front element. It repels water and dirt, and makes it easier to remove smudges.

7. Flexible, high-performance focusing with USD
USD (Ultrasonic Silent Drive)*5 delivers high torque, high precision, and virtually silent autofocus action. A full-time manual focus mechanism permits fine focus adjustments instantly without needing to exit AF mode.

8. Lens hood designed to prevent light from striking lens at all focal lengths
This unique lens hood provides effective shading of the front lens surface over the entire zoom range to minimize flare. It utilizes the unique characteristics of the optical system in which the front lens group recedes as you zoom in from 15 mm to 30 mm.

9. Double-hood structure provides additional strength
A double-hood structure has been incorporated into the lens design to improve the durability of the zoom mechanism.

10. Comes with "SILKYPIX Developer Studio for Tamron", RAW image processing software customized for Tamron SP lenses

The SILKYPIX Developer Studio software can develop high-quality images from RAW data, incorporating adjustments that can express the personal style and taste of the photographer. These include white balance, color, sharpness, and the tonal curves recorded by digital cameras.

The SILKYPIX Developer Studio for Tamron provides a range of functions in addition to the basic adjustment capabilities, such as correcting aberrations (chromatic aberrations, distortion, peripheral light fall-off), based on the optical data. Used in tandem with Tamron's SP series lenses - renowned for their crisp, high-resolution imaging - this advanced technology efficiently produces images that meet photographers' most exacting demands.

1 The XGM (eXpanded Glass Molded Aspherical) lens element is capable of efficiently correcting aberrations in the angle of view that changes significantly with an ultra-wideangle zoom lens. Furthermore, it has an especially significant impact on minimizing distortion and enhancing sharpness of the image at its periphery.

2 eBAND (Extended Bandwidth & Angular-Dependency) Coating is a new nanotechnology-based coating technique developed by Tamron to reduce unwanted reflections.

3 The Sony mount version does not include VC since Sony digital SLR bodies incorporate built-in image stabilization functionality. The name of the Sony mount model is "SP 15-30mm F/2.8 Di USD" without the VC designation.

4 VC (Vibration Compensation) is Tamron's proprietary image stabilization mechanism.

5 USD (Ultrasonic Silent Drive) is Tamron's proprietary ring-type ultrasonic motor.

Specifications

Model: A012
Focal Length: 15-30mm
Maximum Aperture: F/ 2.8
Angle of View (diagonal):110°32’～71°35’ (for full-frame format); 85°52’～49°54’ (for APS-C format)
Lens Construction: 18 elements in 13 groups
Minimum Focus Distance: 0.28m (11 in)
Maximum Magnification Ratio: 1:5
Filter Size: N/A
Maximum Diameter: Φ98.4mm
Length*: for Canon 145mm (5.7 in)**; for Nikon 142.5mm (5.6 in)**
Weight: 1,100 g (38.8 oz.)**
Diaphragm Blade Number: 9 (circular diaphragm blades)*6
Minimum Aperture: f/22
Standard Accessories: Lens caps (push-on front, rear)
Hood: Integrated flower-shaped hood
Compatible Mounts: Canon, Nikon, Sony

* Length is the distance from the front tip of the lens to the lens mount face.
**Length and weight are based on figures for the Canon-mount and the Nikon-mount lens.
*6 The circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture
 
Specifications, appearance, functionality, etc. are subject to change without prior notice.

Detailed Feature Specifications 
 
* VC (Vibration Compensation)
VC is Tamron's proprietary image stabilization system. Tamron's VC employs a three-coil system, whereby three driving coils activate the shake-compensating VC lens group electromagnetically via three ceramic ball bearings. The VC lens elements are held in place only by contact with the ceramic ball bearings, achieving smooth movement with little friction. And since the VC mechanism is moved in parallel using only the motorized control, the mechanical structure has been simplified, enabling the development of more compact lenses.   

* The Ultrasonic Motor 
In the ultrasonic motor, a piezoelectric element arranged in a ring formation generates ultrasonic vibrations in a metallic ring stator, and this vibration energy is used to rotate a metallic ring rotor that is attached to the stator. The rotation energy is in turn transferred from the metallic ring rotor to operate the focusing mechanism of the lens.   

* eBAND (Extended Bandwidth & Angular-Dependency) Coating
eBAND Coating, developed by Tamron, is a new coating technique that radically improves anti-reflection properties. A nano-structured layer (1nm = 1/1,000,000mm), with dimensions smaller than the wavelengths of visible rays of light, is deployed on top of multiple coating layers to maximize light transmission efficiency.

Reflections occur at the interface between the lens and the air because of the difference in refractive indices of the two substances. The nano-structure of the eBAND Coating makes possible an extremely low refractive index by minimizing the differential with that of air while actively inducing air to its own structure, thus significantly suppressing the extent and degree of reflections.  

In addition, the total anti-reflection efficiency at the lens surface is further improved by means of integrating the conventional coating technique based on an active utilization of the "interference of light" principle, attenuating the level of reflections by overlaying reflected light on the coating front surface and that of the back side with its phase shifted, thus increasing the net transmissivity.

As a hybrid technology that integrates the newly developed nano-structured layer with an extremely low refractive index and conventional multiple-layer coatings, the eBAND Coating provides superb anti-reflection performance, delivering crisp, razor sharp images, and eliminating the flare and ghosting that can tangibly damage image quality to a remarkable degree.

I really don't understand why Tamron makes these announcements months before a new lens is even available. Perhaps they want to test the waters of public opinion. Either way, I've always welcomed their lenses - I own several and love using them. So I can't wait to get my hands on this potential beauty. Here's what I have on this lens for now, straight from Tamron.

TAMRON ANNOUNCES THE DEVELOPMENT OF A REVOLUTIONARY NEW ULTRA-TELEPHOTO ZOOM LENS FOR FULL-FRAME AND APS-C FORMAT DSLR CAMERAS: SP 150-600MM F/5-6.3 DI VC USD (MODEL A011)

Cutting-edge eBAND Coating[1] and three LD (Low Dispersion) glass elements deliver superior imaging performance, while the latest built-in VC (Vibration Compensation[2]) system broadens users' horizons in achieving sharper handheld photographs

November 7, 2013, Commack, N.Y. - Tamron Co., Ltd. (President & CEO: Morio Ono), a leading manufacturer of precision optics, has announced the development of an innovative ultra-telephoto zoom lens with a focal length range of 150mm to 600mm for full-frame and APS-C format DSLR cameras. The lens sample will be on display in the Tamron booth at the Salon de la Photo 2013 that will be held from November 7-11 in Paris, France. Pricing and delivery information are not available at this time.

Tamron's current 200-500mm (Model A08) is a popular, compact, easy-to-use ultra-telephoto zoom lens, but customers have shown great interest in having a lens that provides an even greater focal length range.

This all-new ultra-telephoto zoom lens features VC (Vibration Compensation) image stabilization, speedy, precise USD (Ultrasonic Silent Drive)[1], state-of-the-art eBAND (Extended Bandwidth & Angular-Dependency) Coating, which significantly reduces the unwanted light reflections that cause flare and ghosting, and a sophisticated and stylish new external finish.

Its 4x ultra-telephoto zoom capabilities, with a focal length range from 150mm to 600mm, enhance the creative potential of telephoto photography, a captivating feature for all photographers, particularly nature, wildlife, and sports shooters.

Product Highlights

• 4x ultra-telephoto zoom lens with a focal length range of 150mm to 600mm
  The focal length range of this lens was extended by 50mm on the wide-angle side and 100mm on the telephoto side compared to the existing model A08, making it possible to take even more striking photographs of birds, wildlife, sports, and other distant subjects. Mounted on APS-C DSLR cameras, it has a stunning near1000mm telephoto equivalent focal length range of 233mm to 930mm.

• World class image quality
  Employing 20 elements in 13 groups and boasting an advanced optical design, the lens delivers a superior balance of resolution and contrast for sharp, clear images. The front group contains three LD (Low Dispersion) glass elements (two in the first group, one in the third) for enhanced optical correction effectiveness, enabling the lens to thoroughly compensate for on-axis aberrations at the telephoto end. The lens also adopts eBAND Coating, developed from state-of-the-art coating technologies, and conventional BBAR (Broad-Band Anti-Reflection) Coating to greatly suppress ghosting and flare even when shooting under adverse lighting conditions.

• Achieves a 600mm focal length in a compact easy-to-handle package
  Ingenious optical design features minimize the movement of lens groups within the lens when zooming. This reduces the amount of barrel extension needed to cover the complete focusing range, making the entire lens more compact.

• Beautiful background blur effects
  Adopting a 9 blade circular diaphragm enables users to create beautiful background blur effects (Bokeh), which provide even greater potential for creative expression. This circular diaphragm retains a nearly circular shape even at two stops down from its maximum aperture.

• VC (Vibration Compensation) mechanism creates greater opportunities for sharper handheld photography
  Tamron's proprietary VC (Vibration Compensation) image stabilization system uses a three-coil system, delivering significantly sharper images and creating greater opportunities for handheld ultra-telephoto photography.

• Comfortable autofocus
  Tamron's new SP 150-600mm F/5-6.3 Di VC USD features a USD (Ultrasonic Silent Drive) ultrasonic motor drive for swift and accurate AF response, it delivers high torque, very fast response times, and very low noise. The full-time manual focus mechanism allows users to make fine manual focus adjustments at any time even when AF is engaged.

• New elegant, high-class external finish
  Tamron has upgraded the cosmetic design and finish of this lens to create a more sophisticated, high-end look in keeping with the demands of discerning full-frame DSLR users. Employing a sophisticated linear pattern rubber grip on the zoom and focus rings and an attractive and stylish tungsten silver brand ring, this newly designed model accentuates its visceral presence with understated elegance and class.

• Easy-to-use tripod mount
  The tripod mount has been completely redesigned to provide superior stability, durability, ease of use, and portability.

• Comes with "SILKYPIX Developer Studio for Tamron", RAW image development processing software for Tamron's SP lenses
  The SILKYPIX Developer Studio software can develop high-quality images from RAW data, incorporating adjustments that can express the personal style and taste of the photographer. These include white balance, color, sharpness, and the tonal curves recorded by digital cameras. The SILKYPIX Developer Studio for Tamron provides a range of functions, in addition to the basic adjustment capabilities, such as correcting aberrations (chromatic aberrations of magnification, distortion, peripheral light fall-off), based on the optical data. Used in tandem with Tamron's SP series lenses - renowned for their high-depiction capability - this advanced technology efficiently produces images that meet photographers' most exacting demands.

Photos courtesy Tamron.

[1] The eBAND (Extended Bandwidth & Angular-Dependency) Coating is a new nanotechnology-based coating technique developed by Tamron to reduce unwanted reflection. 
[2] VC (Vibration Compensation) is Tamron's proprietary image stabilization mechanism.
[3] USD (Ultrasonic Silent Drive) is Tamron's proprietary ring-type ultrasonic motor.  
[4] Length and weight are based on figures for the Nikon-mount lens.
[5] Length is the distance between the front tip of the lens and the mount face.
[6] This circular diaphragm retains a nearly circular shape even when taken at two stops down from its maximum aperture.
[7] The Sony mount does not include VC, since Sony digital SLR bodies include built-in image stabilization.