Quote:
Originally Posted by EngineCo52
what about the 50mm(nifty fifty)?
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The 50 would be even more "zoomed in". I think you have to multiply around 1.5 with crop sensors, so the 50mm would be more like a 75mm on a full frame.
The problem I foresee with the getting the 50 would be if you are in an area where you can't move further back to get more of the landscape into the shot.
The image on the left is at 17mm and the one on the right is at 50mm:
As you can see, you have to be a lot further back with the 50mm to get the same shot, and sometimes when shooting landscapes there isn't room to move back any further. So the 17-40mm provides you with a lot more flexibility depending on what situation you are in.
If your price range is $800ish, why not consider a 17-55mm f/2.8?
The Canon version is a bit pricey:
http://www.amazon.com/Canon-EF-S-17-...1691218&sr=8-1
But Sigma makes one for less than $600:
http://www.amazon.com/Sigma-17-50mm-...1691218&sr=8-3