Tamron AFF017S-700 SP 90mm f / 2.8 DI USD 1: 1 Macro (modelo f017) para Sony A Mount

- Make sure this fitsby entering your model number. - Moisture-Proof and Dust-Resistant Construction - Durable Fluorine Coating on the front element repels water and fingerprints - Advanced coating technology reduces flare and ghosting - Circular aperture to achieve beautiful, rounded blur effects (booked) The SP 90mm F/2.8 MACRO (Model F017) redefines the best in advanced features and succeeds a legacy of superior optical performance. Meticulous craftsmanship is demonstrated in every detail of the exterior design of the newly transformed SP 90mm macro lens. The user can feel it in the exquisitely smooth texture of the metallic barrel. A high standard of Moisture-Proof and Dust-Resistant Construction has been added to prevent intrusion of dust or water droplets. Highly durable, Fluorine Coating is applied to the top element surface and efficiently prevents condensation of moisture and repels smudge-causing substances. The lens features an optical construction of 14 elements in 11 groups, including one LD (Low Dispersion) and two XLD (extra Low Dispersion) glass elements that in consonance help to control lateral and on-axis chromatic aberrations at a very high level of performance. A Floating System works in tandem with the optical construction to efficiently compensate for inherent aberration changes subject to varying distances. Therefore, this lens ensures seamless and outstanding depictive capabilities across the entire shooting range - close or far. A combination of 2 types of coating - band (Extended Bandwidth & Angular-Dependency) layered on top of BBAR (Broad-Band Anti-Reflection) - dramatically improves anti-reflection efficiency to deliver flawless, crystal clear images even against harsh beams of sunlight. Specifications: Filter Diameter 62mm Focal Length 90mm Overall Length 4.6" Format size Di Maximum Diameter 79mm Maximum Aperture F/2.8 Weight 21.5 oz. Minimum Aperture F/32 Diaphragm Blades 9 (circular diaphragm) Lens Construction 14 elements, 11 groups Hood Flower-shaped lens hood Minimum Focus Distance 11.8" Max. Mag. Ratio 1:1