MichaelRowlandsonFeatured By OwnerDec 30, 2012Professional Photographer
70-200 is a great focal range!, Im currently using the 2.8 is ii version and a 2x converter for wildlife. Its still tack sharp at 400mm 5.6
the 70-200 f4 non is is also a really good lens very sharp at f4 and hell of a lot lighter than the 2.8is ii, If you planning on shooting in snow storms and monsoon rains i would opt for the is version because its weather resistant.
When I was looking at getting a 70-200L, I thought about getting the non-IS version as I shoot most of my stuff from a tripod. I read few articles that said if you can afford it, either get a wider variation of the lens or get IS because light can change very rapidly and all of a sudden you find you can't secure the speed you need to make the shot. IS buys back quite a few stops and I am very glad I spent a little bit more and got the IS version of 70-200 f/4 as I found I use that lens far more off the tripod that I ever thought I would and without IS I would be pushing up the ISO or worse losing opportunities.