Right folks,
Apologies in advance if I am about to make a fool of myself.. but here goes.
I am looking for a replacement for my 20D, mainly due to perceived poorer AF performance and higher iso performance, all this may be operator error but we will leave that aside for now.
I am shooting mainly wildlife of all sorts, big zoo animals, horses and down to garden birds.
The contenders
5D - full frame 12mp
Used Mk2 N 1.3 crop and 8mp
New 40D 1.6 crop and 10mp.
So the question is lets say we have a 300mm lens on all 3 bodies and we crop the first two options to give a similar image size in photograph, which of the above will give the best IQ? - is it simply pixel density of sensor?, or something more complex?
A second question is - without cropping which would yield best image quality or would they be so similar that I wouldn't notice - ideally I would like to print A3 size.
Many thanks for any views
Rob

