|85mm focal length, F1.4 maximum aperture and precision Carl Zeiss T* coated Planar optics all add up to superlative performance and handling for portraiture or medium-telephoto landscapes. The delicate, nuanced "drawing" of the Planar design makes it possible to capture subtleties of light and texture that can give images extradordinary depth and presence.|
Circular ApertureWhen changing your aperture to defocus the background, the light sources appear blurred. This 'bokeh' effect of the blurred background can be enhanced with circular aperture blades used in this lens. Conventional aperture blades have flat sides creating unappealing polygonal shaped defocussed points of light. α lenses overcome this problem through a unique design that keeps the aperture almost perfectly circular from its wide-open setting to when it is closed by 2 stops. Smoother, more natural defocusing can be obtained as a result.
Carl Zeiss T* (T-star) coatingCoated optics were pioneered by Carl Zeiss® - and this superb lens features the Carl Zeiss T* (T-Star) coating that virtually eliminates lens flare, internal reflection and light scattering that can otherwise occur at glass-to-air surfaces. The T* coating contributes to outstanding image quality, with high contrast and uniformly excellent resolution right out to the image edges. Not simply applied to any lens - the T* symbol only appears on multi-element lenses in which the required performance has been achieved throughout the entire optical path, therefore guaranteeing the highest quality.
Focus hold buttonOnce you've adjusted focus to where you want it, pressing this button on the lens barrel will keep the lens locked to that focusing distance. The preview function can also be assigned to this button through the camera's custom settings.
Distance encoderThe distance encoder plays an integral part in ADI flash metering, which delivers high precision flash metering that is unaffected by the reflectance of subjects or backgrounds. The distance encoder is a lens component that directly detects the position of the focusing mechanism, and sends a signal to the CPU in order to measure distance to the subject. During flash photography, this data is very useful in calculating how much flash output is appropriate to the scene.
|Lens Type||Standard & Medium Telephoto|
|Lens Mount Type||Sony A-mount|
|Focal Length (35mm equivalent)||APS: 127.5 mm (35mm Equivalent: 85 mm)|
|Filter Diameter||72 mm|
|Lens Groups-Elements||7 groups, 8 elements|
|Minimum Focus Distance||2' 10” (85cm)|
|Aperture Blade||9 blades (Circular aperture)|
|Aspheric Elements||no aspheric|
|Non-rotating Focusing Ring||Yes|
|Weights and Measurements|
|Dimensions (Approx.)||3 1/4 x 3” (81 x 75mm)|
|Weight (Approx.)||1 lb 7 oz (650g)|
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