Quandry: Canon 70-200 f/4L or Sigma 70-200 f/2.8?

f2.8's always where it's at imo.... if you never need it anywhere dark though (ie 1/200th min at whatever iso you can tolerate), then the f4 is meant to be tack sharp...
 
It depends! If you need f/2.8, then there's only one option. If you're going to only be using it at f/4, the Canon is probably the better, lighter choice.

I had a 70-300 IS USM, and sometimes I found f/4 at 200mm not fast enough, so went for the sigma (which has no focussing issues). I thought it was front focussing at first, but I soon realised it was sloppy technique, and now I'm as happy as anything with it :thumbs:

Chris
 
get the f4 then. It's relatively small and light, you're probably ok without a tripod ring tbh, though it might be a bit harder to balance on a gorillapod.
 
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