Technical question about MF adapters

Started Nov 9, 2013 | Discussions thread
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wb2trf
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Technical question about MF adapters
Nov 9, 2013

Supposing that a manual focus non-optical adapter maintains perfect parallel with the camera face but allows focus beyond infinity, slightly, is there any adverse affect on image quality, besides the obvious risk that you focus incorrectly by assuming the infinity stop is good, when in fact it isn't.

I have several adapters that seem to do this and have been assuming that so long as I am careful about not relying on the infinity stop there is no adverse effect, but now I was wondering.

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