The Tamron 20mm f/2.8 Di III OSD M 1:2 Lens is a versatile wide-angle prime made for full-frame Sony E-mount mirrorless cameras. It is sleek and ultra-wide. This lens has a slim and light design that is perfect for everyday, walkaround shooting because to its moderately bright maximum aperture. Its versatility is also enhanced by its minimum focusing distance of 4.3" and maximum magnification ratio of 1:2 for working with close-up subjects. With full-time manual focus override, an OSD stepping motor achieves fast and nearly silent autofocus performance. The lens also has a fluorine coating and a moisture-resistant physical construction for functioning in bad weather.
- Wide-angle prime is designed for full-frame Sony E-mount mirrorless cameras, however is also suitable for use with APS-C models where it provides a 30mm equivalent focal length.
- Modestly bright f/2.8 maximum aperture strikes a balance between being suitable for working in available lighting conditions and realizing an impressively compact and lightweight profile.
- Three LD (Low Dispersion) elements reduce chromatic aberrations and color fringing in order to produce increased clarity and color fidelity.
- One molded glass aspherical element suppresses distortion and spherical aberrations for greater sharpness and more accurate rendering.
- BBAR (Broad-Band Anti-Reflection) coating has been applied to lens elements to reduce surface reflections and prevent lens flare and ghosting for increased contrast and color accuracy.
- Ideal for close-up shooting, this lens offers a half life-size 1:2 maximum magnification along with a minimum focusing distance of 4.3" to suit working at near distances.
- OSD stepping motor offers especially quiet, fast, and precise autofocus performance along with full-time manual focus override.
- A moisture-resistant construction benefits this lens' use in inclement conditions, and a fluorine coating has also been applied to the front lens element to protect against dust, dirt, and smearing.
- Rounded seven-blade diaphragm contributes to a pleasing bokeh quality.
Tamron Di III
Wide Angle Lens
Sony E (Full Frame)
Closest Focus Distance
OSD stepping motor
unit which is exceptionally quiet
Angle Of View
94 Degree 30'
35mm Equivalent Focal Length
Fluorine Coating for
protection and safe cleaning
ED Glass Elements
Lens Elements / Groups
10 Elements / 9
Dimensions (Diameter x Length)
2.87 x 4.3" (73
Image Stabilization Type
Waterproof / Water Resistant
Construction protects your lens
• E-Mount Lens/Full-Frame Format
• Aperture Range: f/2.8 to f/22
• Three Low Dispersion Elements
• One Aspherical Element
• BBAR Coating
• OSD Stepping Motor
• 1:2 Magnification, 4.3" Min. Focus
• Water-Resistant Design, Fluorine Coating
• Rounded 7-Blade Diaphragm
• Tamron 20mm f/2.8 Di III OSD M 1:2 Lens for Sony Full Frame Mirrorless
• Tamron SP Front Lens Cap (67mm)
• Rear Lens Cap
• HF050 Lens Hood
• Limited 6-Year Warranty