Category-disrupting ‘standard zoom’ for still photography and video
Fast F2.8 standard zoom for Sony full-frame mirrorless cameras covers 20-40mm and offers class-leading1 compact size and light weight
Driven by a determined quest for portability, the 20-40mm F/2.8 Di III VXD (Model A062) is TAMRON’s innovative, fast-aperture Sony E-mount zoom lens that will change your mind about standard zooms. The lens starts from 20mm at the ultra wide-angle end and covers up to 40mm in the standard focal range. Despite the breadth of the zoom range, it still offers class-leading compact size and light weight. Useful in a wide variety of shooting situations, the new zoom is ideal for everything from casual snaps and family events to landscapes captured with natural compositions and perspective, and even indoor photography in tight quarters using the ultra wide-angle. In addition, since the 20mm wide-angle field-of-view captures scenes in all their glory, it is also ideal for self-shooting during vlogs and other content. The lens’s AF drive uses the fast and high-precision linear motor focus mechanism VXD (Voice-coil eXtreme-torque Drive). The optical design makes use of special lens elements and strikes a perfect balance between a compact body and high image quality. The lens offers excellent close-shooting performance, offering wide macro shooting with an MOD (Minimum Object Distance) of 0.17m (6.7 in) and maximum magnification ratio of 1:3.8 at the 20mm end. All these exciting features are brought together into a super-compact package, making the 20-40mm F2.8 a lens that lets you enjoy hassle-free shooting. The high-quality finish pleases the eye, while the exceptional portability and light weight of this fast F2.8 lens means you’ll always want it with you as you pursue a joyful world of photographic encounters.
1 Among the fast-aperture zoom lenses for Sony E-mount full-frame mirrorless cameras (As of August, 2022: TAMRON)
An unprecedented compact and lightweight design that shatters stereotypes of fast-aperture zoom lenses
The 20-40mm F2.8 is a fast-aperture standard zoom lens but maintains its fast F2.8 aperture across the entire zoom range while sporting a remarkably compact and lightweight design, just 86.5mm (3.4 in) long, with a maximum diameter of 74.4mm and weight of only 365g (12.9 oz). With a size that is easy to carry and a light weight that’s well-suited for handheld shooting for extended periods, the 20-40mm F2.8 will likely become your first choice for travel, street shooting, everyday carry, and spontaneous photo opportunities.
Control the composition as you shift seamlessly from the ultra wide-angle to the standard focal length
The 20-40mm F2.8 covers the focal length range of 20-40mm, making it a fast-aperture standard zoom lens for full-frame mirrorless cameras that offers true ultra wide-angle. Compared to a conventional zoom lens that starts at 24mm, the difference is obvious the minute you bring the camera to your eye. When shooting landscapes, you can enjoy the wide-angle field-of-view and dynamic performance that only an ultra wide-angle lens delivers. Moving in the other direction, the full zoom range covers up to 40mm, also offering popular 28mm and 35mm lengths. So, it’s ideal for snaps and casual portrait, too. When attached to an APS-C mirrorless camera, it covers the full-frame equivalent focal length range of 30-60mm that also covers the common standard range.
Awesome videos and selfies at 20mm with fast, high-precision AF
The excellent handling benefits inherent in the compact and lightweight design are especially useful when shooting video. The lens remains well-balanced when using a camera rig, cage, or gimbal stabilizer, so it’s an excellent choice for vlog shooting. One advantage of the 20mm ultra-wide focal length is that a broad expanse of the background can be incorporated when selfie shooting. What’s more, the AF drive system is equipped with the VXD linear motor focus mechanism. Thanks to the high-speed, high-precision AF, speedy, pinpoint focusing is certain at any point of focus from the MOD to infinity. Excellent focus tracking performance allows you to track movement steadily when shooting video. In addition, noise from the AF motor has been minimized, making it ideal for still and video when shooting in conditions where silence is required.
Compact body with high image quality
The 20-40mm F2.8 is packed with unique TAMRON innovations that enable it to have a compact body while ensuring high image quality. The optical construction has 12 elements in 11 groups. The precision design features a generous arrangement special lens elements including four LD (Low Dispersion) lens elements that control light dispersion, and two GM (Glass Molded aspherical) lens elements which combine to produce high optical performance. One of the greatest appeals of this zoom is the creamy, beautiful bokeh that is distinctive to fast-aperture lenses. Additionally, the BBAR-G2 (Broad-Band Anti-Reflection Generation 2) Coating, TAMRON’s next-generation technology, suppresses ghosting and flare to enable the crisp and clear rendering of images.
Close-focusing wide macro shooting with an MOD of 0.17m (6.7 in) at the 20mm end
Unique wide macro shooting at close-up distances emphasizes perspective to heighten the impact of a composition, and it’s only possible with an ultra wide-angle. The excellent close-range shooting performance, which achieves an MOD of 0.17m (6.7 in) at the 20mm wide end with a maximum magnification ratio of 1:3.8, produces rich and dynamic imagery that brings out the finest details of the subject and gives you another avenue of creativity.
Compatible with TAMRON Lens Utility™ software
The 20-40mm F2.8 is compatible with the dedicated TAMRON Lens Utility software (for PC/ for devices with Android™  OS) that was developed in-house by TAMRON. TAMRON Lens Utility will let users customize focus ring settings and update to the latest firmware when necessary. In addition, by using the Mobile version, Focus Preset and A-B Focus is available, and those functions can be operated remotely without touching the lens. Users may customize functions for various still photography and videography shooting styles, thereby providing a more personalized and fulfilling shooting experience.
 Android is a trademark of Google LLC.
 To connect your PC and lens, use the TAMRON Connection Cable (USB Type-A to Type-C/ Model CC-150, or USB Type-C to Type-C/ Model CC-350) sold separately.
To connect your smartphone and lens, use the TAMRON Connection Cable (USB Type-C to Type-C/ Model CC-350) sold separately.
 Lens firmware updates are not supported with the Mobile version. Performing firmware updates requires the TAMRON Lens Utility for PC and a computer.
TAMRON Lens Utility ＞
New 2nd-generation lens design improves both operation and ergonomics
The 20-40mm F2.8 incorporates a new design that becomes the hallmark of TAMRON lenses introduced in the future. In constant pursuit of improving products in every way possible, TAMRON considered customer feedback and reviewed each part and component of the lens down to the finest details. As a result, TAMRON has enhanced both the operation and tactile presentation of the lens.
Pursue a wide range of photography with a lineup of lenses that all have the same 67mm filter diameter
Great things come in compact packages! This lineup* includes other lenses that share the same filter diameter of 67mm. Lenses in this series feature small and light designs suitable for pairing with mirrorless cameras, and the filter diameter of each lens is the same 67mm. In addition to providing excellent portability when carrying multiple lenses, costly Polarizers, ND and other filters can be used interchangeably. Plus, the hassle of looking for different-sized lens caps when switching lenses has been eliminated. In addition to outstanding optical quality, you will enjoy the highest level of convenience across the entire lineup.
* The lineup of lenses that share the same filter diameter of 67mm for Sony E-mount full-frame mirrorless Fast-aperture ultra wide-angle zoom lens
17-28mm F/2.8 Di III RXD (Model A046) ＞
Fast-aperture standard zoom lens
28-75mm F/2.8 Di III VXD G2 (Model A063) >
All-in-one zoom lens
28-200mm F/2.8-5.6 Di III RXD (Model A071) >
Fast-aperture telephoto zoom lens
70-180mm F/2.8 Di III VXD（Model A056） >
Telephoto zoom lens
70-300mm F/4.5-6.3 Di III RXD (Model A047) >
Ultra-telephoto zoom lens
50-400mm F/4.5-6.3 Di III VC VXD (Model A067) >
M1:2 fixed focal lens
20mm F/2.8 Di III OSD M1:2（Model F050） >
24mm F/2.8 Di III OSD M1:2（Model F051） >
35mm F/2.8 Di III OSD M1:2（Model F053） >
Built with Mirrorless in Mind
・Fast Hybrid AF
・Direct Manual Focus (DMF)
・In-camera lens correction (shading, chromatic aberration, distortion)
* Features vary by camera. Please consult your camera’s instruction manual for details.
* As of August, 2022
|Angle of View
(for full-frame mirrorless format)
|Optical Construction||12 elements in 11 groups|
|Minimum Object Distance||0.17m (6.7 in) (WIDE) /
0.29m (11.4 in) (TELE)
|Maximum Magnification Ratio||1:3.8 (WIDE) / 1:5.1 (TELE)|
|Length*||86.5mm (3.4 in)|
|Weight||365g / 12.9 oz|
|Aperture Blades||9 (circular diaphragm)**|
|Standard Accessory||Flower-shaped hood, Lens caps|
* 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.
Specifications, appearance, functionality, etc. are subject to change without prior notice.
This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.
October 27th, 2022
Optical Construction (12 elements in 11 groups)
MTF (Modulation Transfer Function) curves describe to what extent the tested lens can faithfully reproduce contrast of the subject in images it captures.
The closer the 10 lp/mm (line pairs per millimeter) curve (the thick line for low frequency) in an MTF chart to "1" of the vertical axis (the higher up), the higher the contrast reproduction performance of the tested lens will be. The closer the 30 lp/mm curve (the thin line for high frequency) to "1" (the higher up), the higher the resolving power and thus the subjective sharpness of the lens will be.
Lens performance differs depending upon directions. Solid lines show performance in the sagittal (radial) direction while dotted lines indicate performance in the meridional (circumferential) direction. When sharp lenses capable of delivering uniform optical performance over the entire image field are tested, MTF charts show curves plotted in good balance.
Performance characteristics of photographic lenses cannot be expressed with only MTF charts. There are other factors that are expressed in different methods, such as taste of softness and degrees of compensation of various aberrations. But you can use MTF charts as a scale to measure lens performance.
Live Photos [with EXIF data]Click on the photo to see the original image
- Camera：Sony α7R III
- Focal length：35mm
- Shutter speed：1/160sec
- Image size：5304px × 7952px (21.9MB)
- Camera：Sony α7R III
- Focal length：20mm
- Shutter speed：1/400sec
- Image size：7952px × 5304px (31.3MB)
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