Sigma EX 17-50mm f2.8 DC OS USM for Canon EF lens mount_Olympus OM but with a few notable

but with a few notable issues: there is some separation at the edge of the front element group

Also: a built-in

It’s a Softar

with a few light cleaning marks

But it is lightweight

Sigma EX 17-50mm f2.8 DC OS USM for Canon EF lens mount_Olympus OM but with a few notableThe Sigma EX 17 50mm f2. 8 DC OS USM for Canon EF S mount offers a versatile zoom range from wide angle to short tele combined with a fast f2. 8 constant aperture. Built in image stabilization allows handheld use in a wide range of difficult lighting conditions. This is a lens for APS C sensor sized Canons, and won't work with full frame EF cameras. Clean glass, excellent functionality. Great cosmetic condition with only minor wear from use.