550d user upgrade to 7d or 5dmk2

Started Jan 15, 2012 | Discussions thread
anolphart New Member • Posts: 9
Re: 550d user upgrade to 7d or 5dmk2

I have the 5DMK11 and at times have been frustrated with its sluggish auto focus, especially in low light, so bear that in mind when considering using it for either sports or moving wildlife. I also use it for bird photography and it often won't keep up with the bird simply moving about on a branch. Another frustration for me is the vibration caused by mirror slap even with shutter speeds of up to 1/80 (and yes it was mounted on a sturdy tripod when tested). I now either lock the mirror or use live view to overcome this problem. I also own a 400D which does not have any symptoms of mirror slap, even at quite slow shutter speeds.

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