This is a classic Canon "L" professional lens. It has a built in hood and comes with a tripod mount, both lens caps and a B+W F-Pro UV filter. It auto-focusses instantly and is incredibly sharp. It will work on full frame and APS-C Canon cameras. On the latter its focal length is 650mm. No IS, however, for panning shots of birds or action you don't need it. Low light or stationary shots will require a tripod or monopod. Add a 1.4x or 2x extender and you'll have a 800-1000mm+ super-telephoto!. VERY light and compact which is why it remains so popular with birders and hikers. Price is right too! Email or phone please.