• 20mm F/2.8 Di III OSD M1:2

Capture your most expansive imagination

F/2.8 ultra wide-angle, close focusing, fixed focal lens for Sony E-mount full-frame mirrorless cameras

The 20mm F/2.8 Di III OSD M1:2 (Model F050) is fast handling and packs expressive power that is the signature of fixed focal lenses. It’s the ideal first ultra wide-angle lens for any photographer. It is designed exclusively for mirrorless cameras. Light weight and compact, the Model F050 is extremely portable, ideal for situations where you need to travel light. The Model F050 is a creative tool that dynamically captures scenery by maximizing the perspective unique to ultra wide-angle lenses. The incredibly short 0.11m (4.3 in) MOD (Minimum Object Distance) makes it possible to get closer to your subjects than you’d ever imagined. In addition to the F/2.8 aperture, the Model F050 is constructed using special glass materials including LD (Low Dispersion) and GM (Glass Molded Aspherical) lens elements effectively arranged to quash aberrations. The Model F050 provides outstanding optical performance across the entire frame, and delivers a sharp image, right down to the texture of the subject. With Moisture-Resistant Construction and dirt-resistant Fluorine Coating, photographers can shoot confidently outdoors. If you can own only one ultra wide-angle, the Model F050 should be your first choice.

Get closer to your subject. As close as 0.11m.

One of the key features that makes this lens so exciting is its amazing ability to shoot close-ups. With this lens, you can get closer to an object than you’d ever imagined. At the 0.11m (4.3 in) MOD, the lens achieves its maximum magnification ratio of 1:2. You’ll never again be frustrated because you cannot get close to an object while shooting. This remarkable performance allows users to create compositions that exploit dramatic perspective (closer subjects are larger, and distant ones are smaller) and that are unique to wide-angle lenses. By getting close to an object, you can produce a one-of-a-kind photo and leverage the beautifully blurred background bokeh.



Focal length: 20mm Exposure: F/2.8 1/500sec ISO 100
The extreme portability enhances the limitless versatility of the lens

Take it with you anywhere. This lens travels as well as it performs. And because it’s matched to lightweight full-frame mirrorless cameras, your entire system becomes light, fast and nimble. It has a very compact body, weighing just 220g (7.8 oz) and an overall length of 64mm (2.5 in). It’s comfortably portable, highly maneuverable and amazingly easy to use and compose. Because the overall length does not change when focusing, you can get as close to an object as you need to without fear of accidentally bumping the front element. The lens has the same 67mm filter diameter as the other members of the series of Tamron high-speed lenses for Sony E-mount cameras. So you can swap filters (like polarizers), lens caps and other accessories for convenience. Who says great things can’t come in small packages?

*Our lineups for Sony E-mount cameras with 67mm filter diameter
M1:2 Prime lens
24mm F/2.8 Di III OSD M1:2 (Model F051) >
35mm F/2.8 Di III OSD M1:2 (Model F053) >

High-speed standard zoom lens
28-75mm F/2.8 Di III RXD(Model A036) >

High-speed ultra wide-angle zoom lens
17-28mm F/2.8 Di III RXD (Model A046) >

Ultra wide-angle is dramatically creative

This lens provides outstanding optical performance and overall image quality, characteristics relentlessly demanded from a prime, fixed focal lens. The expert arrangement of the LD and GM specialized glass elements greatly controls aberrations, including chromatic aberrations. Tamron’s proprietary BBAR (Broad-Band Anti-Reflection) Coating reduces ghosting and flare, which can otherwise occur when taking a photo against the sun. Moreover, leveraging your camera body’s features* it delivers, throughout the frame, high resolution performance that maximizes the benefits of the latest high-megapixel cameras. Whether shooting on the street, full-scale landscapes or architectural photography, this lens delivers exceptionally crisp, colorful and beautiful images and helps you fulfill your creative ambitions.

*When shooting with the camera’s lens correction function enabled.



Focal length: 20mm Exposure: F/2.8 1/500sec ISO 100
Tamron lenses for Sony E-mount cameras are functional, versatile and fun!

This lens is just one of many Tamron lenses for Sony E-mount cameras. Throughout the lineup you’ll find creative tools that help you enjoy the world of mirrorless cameras and a broader range of photographic possibilities. Small and light weight (the perfect match for mirrorless cameras) they are definitively portable and can easily be all carried together as a complete set that’s ready for every situation. For convenience sake, all of the lenses in the series have the same 67mm filter diameter. You can share the use of a single polarizing (or other) filter and avoid the aggravation of searching through lens caps when changing lenses. Built with convenience and ease-of-use in mind, you’ll be attracted by the compact size and thoroughly dazzled by the outstanding performance.

*Our lineups for Sony E-mount cameras with 67mm filter diameter
M1:2 Prime lens
24mm F/2.8 Di III OSD M1:2 (Model F051) >
35mm F/2.8 Di III OSD M1:2 (Model F053) >

High-speed standard zoom lens
28-75mm F/2.8 Di III RXD(Model A036) >

High-speed ultra wide-angle zoom lens
17-28mm F/2.8 Di III RXD (Model A046) >

Compatible with main camera-specific features and functions

- Fast Hybrid AF
- Eye AF
- Direct Manual Focus (DMF)
- In-camera lens correction (shading, chromatic aberration, distortion)
- Camera-based lens unit firmware updates
* Features vary by camera. Please consult your camera’s instruction manual for details.
* As of September, 2019.

The Exterior

Technical Information

Specifications

Model F050
Focal Length 20mm
Maximum Aperture F/2.8
Angle of View
(diagonal)
94°30'(for full-frame mirrorless format)
Optical Construction 10 elements in 9 groups
Minimum Object Distance 0.11m (4.3 in)
Maximum Magnification Ratio 1:2
Filter Size Φ67mm
Maximum Diameter Φ73mm
Length* 64mm (2.5 in)
Weight 220g (7.8 oz)
Aperture Blades 7 (circular diaphragm)**
Minumum Aperture F/22
Standard Accessory Flower-shaped hood, Lens caps
Compatible Mounts Sony E-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.

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.

Release Date
January, 2020

MTF Chart Guide

MTF  

Optical Construction (10 elements in 9 groups)