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Canon EF 17-40mm f/4L USM

ef17-40_4l_1_
Review Date: Apr 30, 2008 Recommend? yes | Price paid: $350.00 | Rating: 9 

 
Pros: Sharp, fast, light weight.
Cons:
Horrible hood.

I first used this lens on my 30D as a walk around, but never quite went wide enough, or far enough. I tried Sigma 18-50 f2.8 which was great but still lost out on the wide end and focus hunt was awful. I finally upgraded to a 5D with a 24-105L - my dream combination since it came out a few years ago, but finally at a price I could reach. But what a weight, and distortion at 24mm very noticeable if not careful with positioning. Then the 17-40L when on and wow, full frame is what this lens was really made for. In combination with my 70-200L, is is everything I have always wanted. OK - it could go just a tad longer, and to f2.8, but then it would be a whopper again, and with the image quality of the 5D, cropping to the equivalent of around 80mm is a piece of cake.

 
Sigma 18-50mm F2.8 EX DC

18-50f28
Review Date: Aug 21, 2006 Recommend? yes | Price paid: Not Indicated | Rating: 8 

 
Pros: Sharp, light weight, great feel.
Cons:
Could do with HSM - hunts occasionally.

I originally bought a Sigma 18 - 125 to go with my Canon 10D - lovely to use but never got an image from it that I would call sharp. I really wanted the Canon 17 - 40 L but was unhappy with the short range, the f4 the weight, and the cost. The Sigma EX is great to use and does certainly produce those "sharp" images I never got with the original lens. I still greatly miss the range but I now have filled that gap with a Canon 70 - 200 f4 L which is just stunning. A great walkabout lens, until Canon give the 17 - 40L an upgrade.