Sony SAL-135F18Z 135mm f/1.8 Carl Zeiss Sonnar T Telephoto Lens for Sony Alpha Digital SLR Camera

Product Description Whether you need a large aperture to shoot in low light, a suitable shutter speeds for shooting action or creative control of background defocusing, the 135mm lens will reward you with stunning resolution and contrast where it counts. In addition to portraits and landscapes, this focal length is a good choice for indoor sports. Featuring Carl Zeiss T* coating and built-in image stabilization, this lens will make it easier than ever to capture crisp images. From the Manufacturer Sonnar T* 135mm F1.8 ZA Telephoto Zoom Lens Whether you need a large aperture to shoot in low light, a suitable sutter speeds for shooting action or creative control of background defocusing, the 135mm lens will reward you with stunning resolution and contrast where it counts. In addition to portraits and landscapes, this focal length is a good choice for indoor sports. Featuring Carl Zeiss T* coating and built-in image stabilization, this lens will make it easier than ever to capture crisp images. Technology Circular Aperture When 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. ? 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. ED (Extra-low Dispersion) glass As focal lengths get longer, lenses built with conventional optical glass have difficulties with chromatic aberration, and as a result images suffer from lower contrast, lower color quality, and lower resolution. ED glass dramatically reduces chromatic aberration at telephoto ranges, and provides superior contrast across the entire image, even at large aperture settings. Super ED glass provides enhanced compensation for chromatic aberration. Carl Zeiss T* (T-star) coating Coated 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 button Once 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 encoder The 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. Additional Features Internal focusing Only the middle groups of the optical system move to achieve focus, so the overall length of the lens does not change. Other important benefits include fast autofocusing and a short minimum focusing distance. Also, the filter thread at the front of the lens does not rotate, which is convenient if you?re using a polarizing filter. 2008 Sony Electronics, Inc. All rights reserved. Sony, the Sony logo, Alpha, ?α? and Super SteadyShot are trademarks of Sony. All other trademarks are trademarks of their respective owners.

Features

• Carl Zeiss Sonnar T 135mm f/1.8 Telephoto, Wide aperture for amazingly bright telephoto shots, Superb sharpness with Sony'super Steady Shot system
• Close-up focusing capability (less than three feet), Internal Focusing to speed auto-focus response
• 2 ED Glass elements for sharp clear long shots
• Carl Zeiss Sonnar T 135mm f1.8 telephoto with wide aperture for amazingly bright telephoto shots
• Superb sharpness with Sony'super SteadyShot system
• Close-up focusing capability (less than three feet)
• Internal Focusing to speed autofocus response
• 2 ED glass elements for sharp clear long shots