This is a Sigma 28mm - 300mm DG lens for Canon SLR's. This lens has a red dot (EF mount) so it will mount on all digital SLR's with a red dot.
The lens is in very good condition but the rear element has some haze inside the glass, probably fungus. This causes pictures to have a hazy center.
The lens body shows little signs of use. It was a Quantaray UV filter attached. The zoom and focusing rings are rotate smoothly. The lens extends smoothly. The switches work well. When pointed down and the switch is not in the lock position, the lens barrel does not extend by itself.