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Canon EF 17-40mm f/4L USM

ef17-40_4l_1_
Review Date: Nov 12, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: Consistent excellent sharpness, color, contrast at all apertures, all focal lenghths, and across the frame on a cropped camera.
Cons:
F4 aperture is slow for indoors

Bottom line, for this focal length and this aperture, nothing is better.
The lens is very sharp wide open across the frame, and I'm not just saying usable sharp. I have a hard time telling what aperture I shot at if it's not close up where depth of field makes it apparent.

It has that "L" color and contrast. It almost gives your photos a 10% or more boost in saturation without any post processing, and the combination of contrast gives that pop and dimension to your photos.

Build quality is as good as it gets.

USM is as fast as it gets, and FTM focus is very handy.

It's really hard to say anything bad about it other than F4 doesn't make this a low light indoor lens, but that's what primes are for.