If I take an image with a 50mm f1.4 on a say 2/3 crop sensor and take another image with the same lens on a full sensor, I thought the centre 2/3 of the full size sensor image would be identical to the image on the crop sensor. In other words, the full sensor can be made to look like a crop camera image by simply "cropping" the full sensor image to 2/3 size. Mark
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