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      04-30-2012, 06:13 PM   #3183
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Drives: 2006 BMW 330i ZPP, ZSP
Join Date: Dec 2008
Location: Minneapolis, MN

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Originally Posted by DARK_M3 View Post
I thought about the f/4L IS. My only concern is that since I use a 50D as opposed to say, the 5D MkIII, will it be a wise choice given the limited ISO performance as noted by dcstep? In other words, will I need the faster f/2.8 mated up with my current bodies?
The f/4L IS worked fine on my 20D. It works great on the 5D2, and of course the 5D3. Is the f/2.8 better? I think the Mark II version of it might be by a hare. But, it costs and weighs twice as much. All my lenses, except the 50mm f/1.8, were f/4 when I used the 20D.

You don't need a f/2.8 with better bodies. You need f/2.8 if you're shooting in low-light a lot, or if you need something fast. For example, f/2.8 might be useful for weddings, but not necessary if shooting landscapes during the day.

In regards to telephoto zooms, the 70-200mm f/4L IS is probably the best bang for the buck.

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