Canon 24-105mm f3.5-5.6 IS USM STM

Offering the quiet and smooth autofocus benefits of a stepper motor for full-frame EOS DSLRs, CANON STM's EF 24-105mm f/3.5-5.6 IS is a standard telephoto lens that supports the use of Movie Servo AF mode. Complementing the focus accuracy is an equally apt optical image stabilizer, which helps minimize the appearance of camera motion by four shutter speed stops to benefit working with slower shutter speeds or more focal length positions. This wide-angle to telephoto zoom is designed as a useful option for everyday use, and champions working in difficult lighting conditions for both photo and video applications. In relation to the optical design, this lens incorporates two aspherical elements and a UD element to reduce chromatic aberrations throughout the zoom range and benefit from overall sharpness and image clarity. In addition, optimized coatings have also been applied to individual elements for the suppression of surface reflections for high contrast neutral color imaging. The lens is also designed around a seven-group optical zoom system, along with an internal focusing mechanism to speed up focus times. In addition, a rounded seven-blade diaphragm is employed to produce a smooth benefit for selective quality out-of-focus focus images.