Canon EF 100-300mm f/4.5-5.6 USM

Canon EF 100-300mm F4.5/5.6 USM lens This lens has good glass and it has a fast USM motor so it adjusts quickly and takes good images. It needs a lot of light to shoot at longer focal lengths so that it can be stopped down to f8. For the price it is a excellent buy for a zoom at that length and it beats all the 75-300mm lens. On a crop senor lens it's even better because the soft parts of the image at the corners aren't in the image. For the current price it's selling for it's a steal.

Not a bad lens, with caveats Not the best lens out there, but very reasonable. I've found it's very sharp at 100-200mm, but at 300mm it gets distictly soft and a little dreamy. If you like a kind of ethereal look, shoot at 300mm! For those of you blaming the user for the soft images at 300mm (which isn't unreasonable), I've tested with a tripod and remote release and get the same dreaminess. I've also found I get the best results at 250th of a sec--remember this is a long lens without IS, so you have to shoot really fast shutter speeds to stop your movement.

Solid with great optics. This lens has become a reliable go-to in my kit. Not missing the absence of image stabilization, and hard to argue with a 480mm equivalant on an EF-S camera body. Low-light performance as expected at full zoom and f5.6.