Question
Camera adapters
Hello everyone, I hope my question is not outside the scope of this page..
I have a Sony Alpha 7 III camera, With the tamron 24-70mm f2.8 lens and the sigma mc-11 adapter, sometimes I see that the focus is not good, I was told that it is better to use Sony lenses, and that this thing has an effect on the lens aperture and shutter speed, is this true?
