Sigma 17-50mm F2.8 EX DC OS HSM Standard Zoom Lens for Canon APS-C A standard zoom lens from SIGMA with high-performance optical image stabilization. - Brand: SIGMA - Model Name: 17-50mm F2.8 EX DC OS HSM - Included Accessories: Box, Case, Instruction Manual - Optical Image Stabilization: Yes - Focal Length: 17-50mm Canon EF-S Mount This is a bright lens with a wide aperture of F2.8 throughout the zoom range. I used it for astrophotography, such as taking pictures of the Milky Way. I purchased it used and used it once or twice a year. Operation has been confirmed. I am selling my APS-C camera because I bought a full-frame single-lens reflex camera. Everything in the photos is included: case, hood, instruction manual, and caps. There is some wear and tear, but the image quality is not affected. Wide-angle zoom, wide-angle lens