Full frame lenses on Metabones III: do they operate full frame or crop on A7R?

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Mike Stratil
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Full frame lenses on Metabones III: do they operate full frame or crop on A7R?
5 months ago

Today I came across this conversation:

Bob Salomon , Dec 18, 2013; 07:45 a.m.

How do you plan on setting the aperture with the Canon lenses on a Sony camera?

Mark S. , Dec 18, 2013; 07:58 a.m.

As far as i heard this is no problem with the right adapter (metabones III).

Bob Salomon , Dec 18, 2013; 09:50 a.m.

That adapter is supposed to be for NEX cameras and using it may mean that youwould be in crop mode with the a7r and that would not let you shoot at 36mp. You better make sure before you make the assumption.

See: http://photo.net/large-format-photography-forum/00cFCk

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Does anyone know whether Saloman is correct? I have assumed that a full-frame Canon lens on an A7R would be operating in full frame mode with the Metabones III. Is that a false assumption?

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Michael S

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