The Canon Ef-s 10-18mm f/4.5-5.6 Is Stm lens combines optical excellence with cutting-edge performance, providing an ultra-wide angle of view in a compact, portable package, perfect for Eos cameras with an Aps-c sensor. It has a 4 group optical zoom system and includes a large-diameter element, an aspherical lens element, a Ud lens element and enhanced lens coatings for high-contrast, high-resolution images with minimal glare and aberration. A circular, 7-blade aperture helps ensure fine background blur and the Canon Optical Image Stabilizer system provides up to four equivalent stops of shake correction. The lens has a stepping motor (Stm) and a refined focus mechanism for smooth and continuous Af during video recording. It also has a rear focusing system, plus a high speed Cpu and improved Af algorithm for high-speed Af and offers full-time manual focus for quick adjustments. The Ef-s 10-18mm f/4.5-5.