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Originally Posted by leicar7
Do you mean 31mm x 31mm, or 36x36? The latter would stay within the image circle of existing R lenses.
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I don't think that it would. To fit a square within the existing image circle of an R lens, the side dimension of the square has to be less than the long dimension of the 35mm sized rectangle. In other words, the square has to have sides that are less than 36mm. 31mm x 31mm sounds about right. Having said all this, I think it very unlikely that Leica will bring out a camera with a 31mm x 31mm square sensor. For one thing, Leica lenses (including the lens hoods and internal baffles, etc.) are designed around the 35mm format. For another, I don't see what advantage a 31mm square sensor offers. Most commercial uses of images require a non-square image (7:5 is a commonly used format ratio). Also, unless you are going to print in a square format the captured image is going to have to be cropped. Once cropped, a 31mm square sensor will not offer any quality advantage over a conventional 35mm full frame sensor - if anything, you end up with a quality disadvantage.