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Canon EF 28mm f/1.8 USM

ef28mmf_18usm_1_
Review Date: Aug 12, 2008 Recommend? no | Price paid: $325.00 | Rating: 4 

 
Pros: build quality is not bad
Cons:
-poor performance from f1.8 until at least f2.8 (lots of CA, softness) -very bad AF in medium and low light....only decent in bright light situations

I bought this lens to use as a "normal" lens on a crop sensor body. The autofocus performance in medium and low light was so bad that it was unusable. Also there was so much CA and softness from f/1.8 to f/2.8 that it was really unusable in that range. Don't waste your money on this one....instead get the f/2.8 version which is smaller, lighter, cheaper, focuses better and is better at f/2.8 wide open than this lens is stopped down to f/2.8. What a disappointing lens!

 
Canon EF-S 10-22mm f/3.5-4.5 USM

EF10-22
Review Date: Mar 31, 2006 Recommend? yes | Price paid: $620.00 | Rating: 10 

 
Pros: excellent sharpness and contrast. nice saturated color. low distortion.
Cons:
not built like a tank like L lenses.

i bought the 10-22 and 17-40 at the same time. Comparing them, the 10-22 is much less distorted that the 17-40. The 17-40 has noticible and heavy distortion almost thru its whole range (barrel distortion from 17 until around 30). the 10-22 on the otherhand has a lot of distortion at 10mm but by 12 or 13 the distortion is not noticible. Pincushion distortion at the 22 end is also very slight. i usually prefer to use the 10-22 vs. the 17-40 because of the distortion.

colors, sharpness and contrast are excellent...as good or better than L series lenses.

the only weakness for me is the build quality. the lense is light and doesn't have the tank-like feel of L zooms like the 17-40 or 16-35 or 24-70. also no gasketing. it doesn't feel cheap, just not pro quality. i also don't like how the zoom and focus ring are reversed from L lenses...its an extra thing to think about when you're switching lenses.

i haven't noticed any of the picture quality issues that "stewarda" mentioned in his review.