Ultrasonic motor is used in the lens for providing an "SDM" mechanism enabling quiet and smooth autofocus operation.

Easy to use and high magnification zoom at more than 4X from wide to telephoto for wide coverage range.

Two aspherical lenses (AL) are used for realizing sharp delineation performace with reduced aberrations.

IF (inner focus) optical system for correcting various types of aberrations at all shooting distances. The lens length does not change during focusing for easy handling without becoming unbalanced.

Quick-Shift Focus System that enables manual focusing after focusing by the AF without any need for a switching operation.

SP (super protect) coating on the front lens for repelling water and dirt

*AF is for SDM only, and this is not supported by the body AF. The compatible models are the K-70/K-1/K-3II/K-3/K-S2/K-S1/K-50/K-30/K-5 II/K-5IIs/K-5/K-01/K-7/K-r/K-x/K-m/K20D/K200D/K10D FW Ver.1.30/K100D Super. If attached to other cameras, focusing is performed using the manual focus.

*If a C-PL filter or other thicker filter is attached, vignetting can occur at the edges of the image. General filters or thin C-PL filters can be used without any problems.