9 out of 10 points and recommendedsharp, contrasty, well built, nice flower hoodghosting, flare, AF in canon mount, tripod collar doesn't come off
Nice lens overall with great optics. Beautiful for portraits. As they say, built like a tank. Nicely damped rings, solid metal construction. It's sharp wide open until about 100mm. Towards the end starts losing contrast and sharpness at 2.8, but this can be recovered in post processing to some degree. It's not worse at 135 than my 17-50 Tamron at 50, which is not bad.reviewed April 22nd, 2008 (purchased for $699)
My gripes in the order of importance would be:
1. Ghosting is quite pronounced, so night cityscapes could be problematic.
2. AF speed should be better at this price point, but the lens does keep up with running kids, etc.