Product information "Sony 18-250mm f/3.5-6.3 DT alpha A-Mount"
The Sony SAL-18250 DT 18-250mm f/3.5-6.3 Autofocus Lens is a compact, wide-angle to long-telephoto zoom lens specifically designed for the Sony Alpha and Minolta Digital SLR cameras. This long zoom range translates into a 14x zoom ratio. This lens is relatively very compact, and the optics have been optimized for the small diameter image circle in order to work with the APS-C size CCD used with digital SLR cameras. When used with a digital SLR camera, the equivalent focal length for this lens is 27-375mm, ideal for snapshots, portraits, interiors and more - an excellent all-around lens to travel with.
Note! Not compatible with 35mm or "full-frame" digital SLR cameras.
DT lenses employ a new optical system that is specifically designed for digital SLR cameras which incorporate an APS-C size CCD image sensor.
ED (Extra-low Dispersion) glass to reduce chromatic aberration at telephoto extension, correcting certain wavelengths of light for sharp, clear images with well defined colors.
Internal Focusing system eliminates front lens rotation, allowing the use of a circular polarizing filter.
A 7-blade circular aperture for pleasing defocused effects.
Related links to "Sony 18-250mm f/3.5-6.3 DT alpha A-Mount"