Sony A7r III with Canon 1.2 lenses - Aperture error - 1.3

haringharing Major grinsMiamiRegistered Users Posts: 281 Major grins

Have been using my Metabones Adaptor with the a7R III for Canon EF glasses.
However, I notice that with both the 50/1.2L and 85/1.2L II, both lenses only open up to f1.3, and not f1.2.
I am curious as to why that may be? Is it Metabones problem? Canon's? It obviously does not matter to the images, but I am curious why that may be the case. Anyone?

The lens is fully open but aperture is 1.3 not 1.2.... Anybody has the same problem?

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