I see. Some say that the d700 should be more light sensitive than a 5DII, as the larger photosites makes it more light sensitive. But to my thinking, the design of it makes a larger impact, hence I started this thread.
Overcast with just a little light illuminating the sky but the moon cannot be seen. Know what I mean?
May I know what you mean by "work out what shutter-speeds you'd be dealing with "? Not quite sure you mean
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"Canon 5D2 is Canon's best low-light performer right now" helped
. At least I know what contenders there are.