What body are you using it on?
Originally Posted by Gee Man
The 70-200 f/4 L is certainly sharper than the 17-40. That's no surprise. On a crop body, there are plenty of lenses that are sharper than the 17-40:
- The $100 Kit lens is slightly sharper
- The $150 IS kit lens is much sharper
- $350 Sigma 18-50 f/2.8 is sharper.
- $450 Tamron 17-50 f/2.8 eats the 17-40 for breakfast.
- $1000 Canon 17-55 f/2.8 beats it, no surprise.
Yes, even the lowly $100 kit lens is sharper than the 17-40.
None of this is surprise given the fact that the 17-40 is a super wide angle lens for full frame. It compares pretty well against other full frame super wide angle lenses. But on a crop camera a higher standard of optical performance is required.
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