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  Reviews by: mufutau  
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Sigma 17-70mm F2.8-4.5 DC MACRO

137_small
Review Date: Jan 21, 2008 Recommend? yes | Price paid: $390.00 | Rating: 9 

 
Pros: Very good focal length for walkaround lens.
Cons:
Wish it was constant f/2.8 throughout the ranges of 17-70mm. The f/2.8 dissappear very quickly.

I got this lens (Sigma 17-70mm f/2.8-4.5) few years ago, the same week it was released for my Canon 20D and it was on my camera for many years as my walkaround lens. But there are times I needed a constant f/2.8 for low light shooting, the f/2.8 on this lens I think goes up to only 20-22mm and after that it was free fall aperture range. So, I bought a Tamron 17.50mm f/2.8 as soon as it was released because of the constant f/2.8 but then I wish the Tamron was with a longer reach of 70mm like Sigma, I missed this on the focal range on Tamron, but then I moved the Sigma 17-70mm to my Canon XTi/400D which is my backup camera because I cannot bring myself up to selling it.
But all in all I still love the Sigma. Nice color, sharp and everyhting. I highly recommend this lens.
 
Canon EF 35mm f/2

ef35mmf2_1_
Review Date: Jan 1, 2007 Recommend? yes | Price paid: $210.00 | Rating: 10 

 
Pros: Very sharp and good contrast on my Canon 20D. Excellent price from www.beachcamera.com after my extensive search on the web.
Cons:
Very loose focus ring when in AF mode that makes me think something was wrong with it. But after asking about this on the forum, I learnt it was normal because it has no USM.

Very sharp and good contrast on my Canon 20D. This should be the normal lens on a Digital camera. I tested this lens from f/2 to f/22 and the sweet point is at f/8. Not too bad indoor with higher ISO.

Very loose focus ring when in AF mode that makes me think something was wrong with it. But after asking about this on the forum, I learnt it was normal because it has no USM.

This is a good lens for the money, same build and optical performance or a little better than the Canon 50mm f/1.8.
I do wish it has a USM ring though.