Sigma 10-18mm f/2.8 DC DN C Lens - Sony E Mount The Sigma 10-18mm F2.8 DC DN | Contemporary is the world's smallest and lightest ultra-wide-angle zoom lens for APS-C cameras, offering a 15-27mm equivalent focal range. Ideal for travel, vlogging, and creative work, it combines a bright constant f/2.8 aperture with ultra-sharp optics and a compact 260g build. Its advanced optical design includes 13 elements in 10 groups (4 aspherical, 1 SLD, 3 FLD), ensuring edge-to-edge sharpness and minimal distortion. A unique aspherical element allows for a smaller lens size while enhancing image quality. With a close focusing distance of just 11.6cm (1:4 magnification), it's great for dynamic wide-angle close-ups with smooth bokeh. Built with durable Thermally Stable Composite (TSC), the lens maintains performance in changing temperatures. The internal focusing design prevents lens extension during focus, keeping balance ideal for gimbals. Its non-rotating front is perfect for using filters. The fast, quiet stepping motor delivers responsive AF for both photo and video, fully compatible with the latest camera AF systems. Optical and in-camera corrections help eliminate flare, ghosting, chromatic aberration, and vignetting, while a Super Multi-Layer Coating ensures clarity even in backlit scenes. With a robust brass mount and weather-resistant sealing, this tiny powerhouse is built to perform anywhere. Depth: 78 MM Compatible with Sony E Mount World's smallest and lightest ultra-wide-angle zoom lens for APS-C cameras Stepping motor for quiet and fast autofocus 15-27mm focal length (35mm equivalent) Bright F2.8 aperture Height: 66 MM Width: 78 MM