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That's what I thought. Would the 1D III be better at high ISO because I will probably get another 7D just so there is no learning curve and crop factor that I would have to switch between. Also you say expose to the right. I generally expose to the left to get a darker image. I also read somewhere that if you have a darker image it is easier to recover some detail. Am I just understanding to the right wrong. I go by the Canon metering and to the right to me has always been brighter.
A couple of points.
First, if you are trying to recover detail from an under-exposed image, you will be introducing large amounts of noise in doing so. Generally, the best exposure is going to be one that exposes to the right but stays just short of the point where you would be blowing out the highlights because once the highlights are truly blown, they cannot be recovered.
Also note that, even if the 5D Mark III has an advantage over the 7D with regard to noise, that advantage is maintained only if you are able to use the full image from the 5D Mark III. If, however, you are shooting in a focal length-limited situation and you need to crop the 5D Mark III image down to the field of view of a 7D image taken with the same lens from the same distance, virtually all of the noise advantage that the 5D Mark III image started out with will disappear.