20mm F/2.8 Di III OSD M1:2 (Model F050) Release
Tamron’s 20mm F/2.8 Di III OSD M1:2 (Model F050) prime lens for Sony full-frame mirrorless cameras will be available for purchase on January 30, 2020 at just $549.99. Similar to the 24mm F/2.8 Di III OSD and 35mm F/2.8 Di III OSD, this lens strikes a balance between gorgeous image rendering and superior operation, features a Ø67mm filter size, and magnification ratio of 1:2. All three lenses support various camera features offered by certain Sony cameras, such as Fast Hybrid AF and Eye AF, and offer a multitude of advanced functions to ensure a pleasant shooting experience and fantastic results. Available for Pre-Order Now!
*28-75mm F/2.8 Di III RXD (Model A036) standard zoom and 17-28mm F/2.8 Di III RXD (Model A046).
Model F050
| PRODUCT NAME | DATE OF LAUNCH |
|---|---|
| 20mm F/2.8 Di III OSD M1:2 (Model F050) | January 30, 2020 |
PRODUCT HIGHLIGHTS
- Enhanced close-focusing capability expands lens usefulness and versatility
This lens focuses very close. The MOD (Minimum Object Distance) is 0.11m – 4.3 inches! and the maximum magnification ratio for is 1:2. This remarkable performance allows users to create compositions that emphasize perspective (closer subjects are larger and distant ones are smaller) and that are unique to wide-angle lenses.
Being able to get in close is one of the most desirable specifications for a wide-angle lens. With dramatic closeup shooting performance for full-frame lenses, Tamron’s F05X lens series unleashes an unprecedented level of shooting freedom. Plus, by moving close to the subject, strongly blurred backgrounds are easier to attain.
- A compact, lightweight 67mm filter diameter system offering excellent portability
Weighing in at 220g, it is exceptionally light, allowing photographers to enjoy shooting comfortably without hesitating about whether to carry the lens. Meanwhile other lenses in Tamron’s lightweight full-frame mirrorless series such as the 28-75mm F/2.8 (Model A036) standard zoom or 17-28mm F/2.8 (Model A046) ultra wide-angle zoom make the perfect companions to broaden the range of shooting possibilities.
As testament to compactness, the 20mm lens feature the same 67mm filter diameter as Tamron’s zoom lenses for full-frame mirrorless cameras. This significantly reduces cost and packing space when working with PL, ND and other filters. Even the front lens caps are the same size, eliminating the hassle of sorting caps when switching lenses. These features combine to produce a highly convenient and mobile system that adds more fun to photography.
- Superb high-resolution performance that matches the latest high-resolution image sensors
The sophisticated optical formula created with the latest lens design technologies boasts exceptionally high rendering performance from edge to edge thanks to the optimal arrangement of LD (Low Dispersion) and GM (glass-molded aspherical) lens elements. Any remaining minor distortions sometimes common in wide-angle lenses are corrected using in-camera functions. Additionally, Tamron’s legendary BBAR (Broad-Band Anti-Reflection) Coating effectively reduces ghosting and flare. With excellent resolving power achieved through uncompromising optical performance and camera-based distortion correction, these lenses can be used with complete confidence for a wide range of applications from casual family snaps to serious professional photography.
- Consistent 64mm (2.5 in) overall length facilitates ease-of-use
At 64mm in length, it achieves an excellent balance with Sony E-mount cameras, the 20mm lens is compact with a front element extension system but is designed to maintain the same exterior length during focusing operations. Therefore, there is less chance of an extended front element accidentally coming into contact with a subject during closeup shooting. And optional manual focusing is easier because the focus ring is positioned toward the front of the lens within natural reach of the thumb and index finger.
- Silent autofocus driven by OSD (Optimized Silent Drive) DC motor
The AF drive system employs an OSD to ensure quiet operation. In comparison to conventional AF types with built-in DC motors, Tamron was able to greatly reduce the drive noise as well as vastly improve AF performance and speed. The lower ambient noise level is sure to be appreciated by video shooters. Overall, this fixed focal lens series provides superlative AF precision for exact focus even when shooting moving subjects, as well as outstanding accuracy and tracking capability. Additionally, this fixed focal series supports various AF features offered by certain Sony cameras, including Fast Hybrid AF, Eye AF, and Direct Manual Focus (DMF) to ensure a pleasant shooting experience.
- Moisture-Resistant Construction and Fluorine Coating
Environmental seals are located at the lens mount area and other critical locations to prevent infiltration of moisture and/or rain drops and afford Moisture-Resistant Construction. This feature provides an additional layer of protection when shooting outdoors under adverse weather conditions. Also, the front surface of the lens element is coated with a protective fluorine compound that has excellent water- and oil-repellant qualities. The lens surface is easier to wipe clean and is less vulnerable to the damaging effects of dirt, moisture or oily fingerprints, allowing for much easier maintenance. These protective features are keenly important for lenses that allow you to get in close to a subject.
- Compatible with main camera-specific features and functions
Compatible with many of the advanced features that are specific to certain mirrorless cameras. These include the following:
- 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.
SPECIFICATIONS
| Model | F050 |
|---|---|
| Focal Length | 20mm |
| Aperture | F/2.8 |
| Angle of View (diagonal) | 94°30' |
| Optical Construction | 10 elements in 9 groups |
| Minimum Object Distance | 0.11m (4.3 in) |
| Maximum Magnification Ratio | 1:2 |
| Filter Size | φ67mm |
| Maximum Diamter | φ73mm |
| Length** | 64mm |
| Length** | Φ73mm |
| Weight | 220g (7.8 oz) |
| Aperture Blades | 7 (circular diaphragm)** |
| Minimum Aperture | F/22 |
| Aperture Blades | 7 (circular diaphragm)** |
| Standard Accessories | Lens hood (Flower-shaped), Lens caps |
| Compatible Mounts | Sony E-mount |
* for full-frame mirrorless format
** 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.
Lens Exterior / MTF / Optical Construction
20mm F/2.8 Di III OSD M1:2 （Model F050)
