Tamron 35mm f/2.8 Di III OSD M 1:2 Lens
Ultra-Compact Wide-Angle Prime with 1:2 Macro Capability for Sony E-Mount
The Tamron 35mm f/2.8 Di III OSD M 1:2 is a masterfully streamlined, featherlight wide-angle prime lens designed exclusively for full-frame Sony E-mount mirrorless camera systems. Spanning one of the most beloved and versatile focal lengths in photographic history, this lens is highly favored for everything from candid street photography and environmental documentary work to daily snapshots and casual portraits.
By prioritizing a modestly bright f/2.8 maximum aperture, Tamron engineered an incredibly portable, pocket-sized optic that matches outstanding sharpness with an impressive 1:2 half life-size macro magnification tracking array, making it a perfect everyday walkaround companion for travel and creative close-up exploration.
Balanced Form Factor & Advanced Optical Clarity
Universal 35mm Field of View: Delivers a classic, natural wide perspective on full-frame Sony Alpha cameras. It is also fully compatible with crop-sensor APS-C mirrorless models, where it provides a highly practical 52.5mm equivalent standard focal length.
Sleek, Everyday Profile: The f/2.8 aperture design strikes an ideal structural compromise, providing solid available-light exposure capabilities while maintaining an exceptionally low-profile, lightweight chassis that will not weigh down your camera rig.
LD Low Dispersion Structural Glass: Built with one LD (Low Dispersion) optical element that aggressively controls secondary spectrum chromatic aberrations and unsightly color fringing, ensuring high micro-contrast and rich color fidelity across your images.
Molded Glass Aspherical Element: Features a high-precision molded glass aspherical element designed to flatten geometric distortions and suppress spherical aberrations, enforcing corner-to-corner frame sharpness and anatomically accurate subject rendering.
BBAR Anti-Reflection Armor: Individual glass elements are layered with Tamron’s BBAR (Broad-Band Anti-Reflection) coating. This specialized coating minimizes surface reflections, ghosting, and internal flare, keeping contrast values high and color rendering neutral when shooting directly toward bright backlit environments.
Half Life-Size Macro Tracking & Silent OSD Drive
1:2 Maximum Magnification Ratio: Optimized for dramatic close-up shooting, this unique prime delivers a half life-size 1:2 macro tracking threshold. This allows you to fill the frame with fine textures, intricate product details, food photography, or nature elements.
5.9-Inch Close-Focusing Proximity: Offers an incredibly near minimum focusing distance of just 5.9 inches from the sensor plane, letting you step up to close-range subjects while retaining a wide, contextual background perspective.
OSD Optimized Silent Drive Stepping Motor: Driven by an integrated OSD (Optimized Silent Drive) stepping motor that ensures fast, precise, and remarkably quiet autofocus tracking, allowing you to capture quiet street candids or video tracks without distracting mechanical noise.
Full-Time Manual Focus Override: Supports immediate manual focus fine-tuning on the fly simply by turning the focus ring—giving you total creative control over pinpoint macro placements without flipping a physical AF/MF switch.
Weather-Sealed Chassis Architecture
Moisture-Resistant Body Seals: Outfitted with specialized weather-resistant rubber gasketing placed at key structural joints throughout the lens barrel, protecting the internal electronic tracks from light rain, mist, and environmental dust during inclement outdoor shoots.
Protective Front Fluorine Coating: The front-most lens element is treated with an advanced, protective fluorine compound. This slick coating actively repels moisture, dust, dirt, and oils, making smudges easy to wipe clean without scratching the glass surface.
Rounded Seven-Blade Diaphragm: Incorporates a 7-blade circular aperture array that creates a smooth, pleasing background blur, allowing out-of-focus specular highlights to blend into a soft, natural aesthetic.
Technical Specifications
Focal Length Reach: 35mm Prime (52.5mm equivalent on Sony APS-C format sensors)
Maximum Aperture Profile: f/2.8
Minimum Operational Aperture: f/22
Lens Mount Type: Sony E-Mount (Full-Frame & APS-C Mirrorless Compatible)
Filter Thread Diameter Size: 67mm (Unified size across Tamron mirrorless primes)
Lens Optical Layout: 9 Elements configured in 8 Groups
Autofocus Motorization: OSD (Optimized Silent Drive Stepping Motor)
Macro Reproduction Power: 1:2 Half Life-Size Maximum Magnification Ratio
Minimum Focus Distance: 5.9 inches / 15 cm
Aperture Blade Count: 7-Blade Diaphragm (Rounded Layout)
Dimensions (Diameter x Length): Approx. 2.87 x 2.52 inches / 73.0 x 64.0 mm
Weight: Approx. 7.4 oz / 210 grams (Ultra-lightweight, compact prime footprint)

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