Sony Alpha Sal35F18 35Mm F/1.08 A-Mount Wide Angle Lens (Black). Product Details From the Manufacturer DT 35mm F1.8 SAM Prime Lens You can shoot anything from landscapes to portraits with this lens, without ever feeling that the large F1.8 maximum apeture is another advantage: bright enough to allow hand-held shooting in low light, and capable of producing smooth defocusing effects that can add depth and artistic elegance to your images. As a bonus, it is small and lightweight making it unobtrusive on the camera, in a bag, or even in a pocket! 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. 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. SAM (Smooth Autofocus Motor) Rather than using the focus drive motor in the camera body, SAM lenses feature an autofocus motor built into to the lens itself that directly drives the focusing element group. Since the built-in motor directly rotates the focus mechanism, operation is significantly smoother and quieter than conventional coupled autofocus drive systems. 2010 Sony Electronics, Inc. All rights reserved. Sony, the Sony logo, Alpha, ??? and Super SteadyShot are trademarks of Sony. All other trademarks are trademarks of their respective owners. Lens not Zoomable. Change from autofocus to manual focus at the flick of a switch DT 35mm f/1.8 Prime Lens (non-zoom) ALC-SH111 Solid-circular lens hood Front and rear lens cap 35 mm equivalent focal length when used with APS-C sensor camera - 52.5 Angle of View, attached to APS-C-format camera; degrees - 44 Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.