| Joined: | Mon Apr 2nd, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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I remember a discussion several years ago on the previous forum which covered this exact topic but not as technical, related to vignetting and the angle of transmission of light from the exit pupil of a lens. Film is less susceptible to the effect due to the shallow depth of the emulsion and lack of micro lenses etc.
I distinctly remember creating graphics showing the effect (which I may still have), exacerbated by small exit pupil and larger FX format.
When the 'Z' mount was announced, Nikon stressed the larger diameter and shorter mount would allow them much greater freedom to optimise their newest range of lenses for digital, presumably along the lines this thread is describing. I also suspect they are using this as a strategy to protect their lens sales, as to some extent the 'F' mount did. Preventing or obstructing third party makers from optimising their universal lenses to take full advantage of the opportunity the 'Z' Nikon mount presents, without making a dedicated version 'Nikon' lens specifically for the 'Z' mount, which presumably would be uneconomical.
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Robert.