With its 35mm-equivalent 52.5mm focal length, the superb SAL-35F14G lens closely reproduces the natural angle of vision of the human eye, making it ideal for both general photo-imaging and fine-art photography applications where zoom capability might distract you from concentrating on aesthetic properties of your subject. In conjunction with the Super SteadyShot(R) image stabilization system of the Sony (alpha) DSLR-A100 camera, this lens captures bright, steady images, even working with a handheld camera in very low light. The Glass-Molded Aspherical Lens improves optical stability and precision in creating sharper, more visually accurate images with minimal distortion, even at fully open aperture. Focus Hold Button for full creative control, a focus hold button located on the lens can lock auto-focusing. In auto-focus mode, the manual focus ring does not rotate, which improves handling ease. Distance Scale Distance Encoder Non-rotating Focusing Ring Focus-hold Button Depth-of-Field Maximum Aperture - f/1.4 Minimum Aperture - f/22 1 Aspheric Element Dimensions - 2-3/4 x 3 (69x76mm) Weight - 1 pounds 2 ounces (510 grams)