The DT 18-55mm F3.5-5.6 SAM is a 3x (approx.) zoom lens designed specifically for use with DSLRs that have an APS-C type sensor. It is exceptionally light and compact, with a weight of only 210g (approx.) and dimensions of 69.5mm (max. diameter) x 69mm (length) that make it very easy to handle and carry.
The DT 18-55mm F3.5-5.6 SAM's zoom covers the frequently used 18mm to 55mm range (35mmformat equivalent: 27-82.5mm), and provides a field of view similar to that of the human eye. As a result, it is an excellent lens for everyday use, capable of handling everything from snapshots and group photos to landscapes and portraits.
Two aspherical elements and one ED (Extra-low Dispersion) glass element are incorporated into the optics to assure high image quality with excellent contrast and resolution all the way out to the periphery of the lens. In addition, a circular aperture mechanism is used to assure smoother, more beautiful background defocusing.
The DT 18-55mm F3.5-5.6 SAM's focusing lens group is driven by a new Smooth Autofocus Motor (SAM) in the lens itself, instead of a motor in the camera body. Responding instantly to AF drive control signals from the camera, the motor delivers power with smoothness and precision. The designed shape of the rear lens element shade has been updated in the SAL18552 to help suppress internal reflections and reduces flare and ghost for higher performance and better image quality.
With a class-leading minimum focusing distance of just 0.25 meters and a maximum magnification ratio of 0.34, the DT 18-55mm F3.5-5.6 SAM can also be used to take macro closeups.