Hi Ned,

I agree the DX future is mirrorless but I think that means the current DX lenses will, unfortunately, not be much use on the future mirrorless cameras. It seems logical that if you remove the mirror, you would also take away the mirror box and so reduce the lens flange to sensor spacing (registration distance). It is for this reason the current DX lenses wouldn't work unless an adapter was fitted, even if the same lens mount was used. We already see this with Sony. The Nex-7 and Alpha77 use the same APS-C sensor but the lenses are not compatible between the two systems because of the different body designs with different registration distances.

Of course you could design a mirrorless camera and keep the current registration distance but that won't help reduce the size of the body and, I think, that is one of the main aims of going mirrorless in the first place. I admit there are other possible benefits in terms of less weight (no glass prism) and less mechanical systems to go wrong.

But then again, I am a geologist not a camera designer so I could be completely wrong on all counts

Bill
North Berwick, Scotland

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