Tamron 35mm F1.8 SP Di USD - Sony A Mount
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An update to a classic wide-angle prime, the Sony A mount SP 35mm f/1.8 Di USD from Tamron pairs the versatile focal length with a sophisticated optical layout for enhanced image quality. One Low Dispersion element, one eXtra Low Dispersion element, and two aspherical elements help to control a variety of aberrations and distortions for consistent and even illumination and sharpness, as well as reduced color fringing, and eBAND and BBAR coatings work to suppress flare and ghosting for increased contrast and color fidelity.
Complementing the imaging capabilities, this 35mm f/1.8 lens is also characterized by a ring-type USD motor, which provides quick, quiet autofocus performance with full-time manual focus capabilities. An inner focusing design and Floating System are also used, and aid in achieving a minimum focusing distance of 7.9" with a maximum magnification of 1:2.5. The lens' construction is also notable in its inclusion of various seals to protect against moisture, as well as a fluorine-coated front element to guard against fingerprints, smudging, and water.
A wide-angle prime, this 35mm lens is designed for full-frame Sony A mount DSLRs, and is also compatible with APS-C models where it will provide a 52.5mm equivalent focal length.
Fast f/1.8 maximum aperture benefits working in low-light conditions and also avails selective focus control.
One LD (Low Dispersion) element helps to minimize chromatic aberrations in order to achieve greater clarity with reduced color fringing.
Two aspherical elements correct for spherical and comatic aberrations, as well as distortion, for consistent edge-to-edge sharpness and illumination throughout the aperture range, as well as a reduction of sagittal comatic flare.
eBAND (Extended Bandwidth & Angular-Dependency) and BBAR (Broad-Band Anti-Reflection) coatings have been applied to lens elements to reduce surface reflections and prevent lens flare and ghosting for increased contrast and color accuracy.
Ring-type USD (Ultrasonic Silent Drive) motor is employed for fast, precise, and quiet autofocus performance that benefits both stills and video recording. This motor also enables full-time manual focus control without having to shift into a dedicated MF mode.
A Floating System is employed that moves a single group of elements to control focus in order to provide faster AF response as well as a minimum focusing distance of 7.9" and maximum magnification ratio of 1:2.5 for enhanced close-up shooting.
Moisture-resistant construction incorporates seals around the lens mount and other areas to benefit working in inclement conditions. Additionally, a fluorine coating has been applied to the front lens element to repel water, fingerprints, and smudges for easier cleaning of the lens surface.
Rounded nine-blade diaphragm produces a pleasing out-of-focus quality when working with shallow depth of field techniques.
SILKYPIX Developer Studio 4.0 for Tamron software is included with the lens, which, aside from enabling basic raw processing and image adjustments, works to specifically correct for various aberrations, including color fringing, distortion, and peripheral light fall-off, using dedicated optical data from Tamron's SP-series of lenses.
Focal Length 35mm
Maximum Aperture f/1.8
Minimum Aperture f/16
Lens Mount Sony A
Format Compatibility Full-Frame
Angle of View 63° 26'
Minimum Focus Distance 7.87" / 20 cm
Maximum Magnification 0.38x
Optical Design 10 Elements in 9 Groups
Diaphragm Blades 9, Rounded
Focus Type Autofocus
Image Stabilization None
Filter Size 67 mm (Front)
|Lens Mount||Sony A|
|Lens Type||Wide Angle|
|Manufacturer Warranty Length||5 years when registered, 12 months unregistered|