Talk:Secondary lens

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Glass

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Cross system adaptors

I've said there's no room for an adaptor to mount an M42 lens on a Nikon bayonet camera, but in fact there's a negative amount of room... The Pentax screw mount is closer to the film than the Nikon bayonet, which is one of the furthest forward of all SLR mounts. But the phrasing escapes me. How do I say that? Andrewa 07:37, 7 September 2007 (UTC)[reply]