Tamron 20mm f/2.8 Di III OSD M 1:2 Lens for Sony E

Tamron 20mm f/2.8 Di III OSD M 1:2 Lens for Sony E

Ultra-Wide Prime with Macro Capability at MojoComputers

The Tamron 20mm f/2.8 Di III OSD M 1:2 lens is an exceptionally versatile wide-angle prime designed specifically for Sony full-frame and APS-C mirrorless cameras in the E-mount system. With a bright f/2.8 aperture, ultra-wide 94.5° field of view, and a super close focusing distance featuring half life-size 1:2 magnification, this lens stands out for landscape, architecture, astrophotography, and close-up photography alike.

Stunning Wide-Angle Field of View

Offering a diagonal angle of view of approximately 94.5° on full-frame sensors and an effective focal length of about 30mm on APS-C (crop) bodies, this lens captures expansive scenes with minimal distortion. Its Ultra-Wide perspective allows creatives to frame vast landscapes, tight interiors, or star-studded night skies with rich detail and punchy perspective.

Bright Constant f/2.8 Aperture

The fast f/2.8 aperture balances the need for handheld low-light shooting and artistic depth of field control. Photographers can isolate subjects with appealing background separation or shoot in dim environments like indoor venues or dusky outdoor settings without excessive ISO or slow shutter compromise.

Macro Capability – 1:2 Reproduction Ratio

Uniquely, this lens offers up to 1:2 macro reproduction, enabling photographers to capture close-up details like flowers, food, or small objects with remarkable clarity. The minimum focusing distance of just 0.11m (4.3 inches) lets the lens fill the frame with intimate subjects while maintaining wide-angle scope, lending to creative shooting perspectives and dramatic compositions.

Superior Optical Construction

Tamron engineered the 20mm f/2.8 Di III OSD M 1:2 with 10 optical elements arranged in 9 groups, including 3 Low Dispersion (LD) glass elements and 1 molded glass aspherical element. This arrangement dramatically reduces chromatic aberrations, color fringing, and spherical distortions to produce razor-sharp images from center to edge. Additionally, Tamron's proprietary BBAR (Broad-Band Anti-Reflection) Coating minimizes ghosting and flare, especially under strong lighting or when shooting toward the sun.

Optimized Silent Drive (OSD) Autofocus

The lens features a stepping motor autofocus system known as OSD (Optimized Silent Drive), which delivers fast, quiet, and precise focusing. The focusing system is especially effective for video recording where silent AF is critical. Full-time manual focus override lets photographers tweak focus immediately without switching modes.

Compact and Lightweight Design

Weighing just about 220 grams (7.8 oz) and measuring only 64mm in length, this lens is remarkably portable and well suited for street, travel, or casual photography. The compact form factor pairs beautifully with Sony mirrorless cameras, making long shooting days more comfortable. It has a 67mm filter thread compatible with widely available filters, making adding creative and protection filters easy.

Durable and Weather Resistant

The lens sports a moisture-resistant construction enhanced by a fluorine coating on the front element to repel moisture, dust, and fingerprints. This makes it a reliable companion in various weather conditions—including misty mornings and light rain—enabling worry-free shooting.

Rounded Diaphragm for Smooth Bokeh

The 7-blade rounded aperture creates unusually smooth bokeh for a wide prime, lending attractive backgrounds to portraits or selective focus shots. This quality enhances both stills and video aesthetics.

Included Accessories and Specifications

• Accessories: Flower-shaped removable lens hood and front/back caps are standard.

• Filter Size: 67mm

• Lens Mount: Sony E-mount (full-frame and APS-C compatible)

• Maximum Diameter: 73mm

• Minimum Aperture: f/22

Why Buy from MojoComputers?

MojoComputers offers authentic Tamron lenses with full manufacturer warranty and expert USA-based customer service. Benefit from competitive pricing, timely shipping, and reliable support, making them a preferred choice for professionals and enthusiasts outfitting their Sony E-mount systems.

Conclusion

The Tamron 20mm f/2.8 Di III OSD M 1:2 is a remarkable ultra-wide prime lens that perfectly blends wide-angle composition capabilities with half-macro reproduction ratio flexibility. Its bright aperture, advanced optics, silent autofocus, and compact, weather-resistant build make it an exemplary choice for photographers seeking creative freedom in landscapes, architecture, astrophotography, or close-up subjects.

Whether capturing sweeping vistas or intimate detail shots, this lens delivers exceptional sharpness, optical clarity, and image aesthetics. For Sony E-mount camera users, the Tamron 20mm f/2.8 OSD M presents an affordable yet professional-grade wide prime that fits perfectly into any photo or video workflow.

Order your Tamron 20mm f/2.8 Di III OSD M 1:2 lens today from MojoComputers and experience the fusion of ultra-wide versatility and macro creativity in a compact package.