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Im pretty confused about my new D780 guys. When I put a sigma 150-600mm lens on it, sometimes I get the f/0 error and I have to kinda twist the lens a bit against the body to get it to clear the error again.
I rented a sigma 150-600mm sport and didn't have this problem at all. I got ANOTHER 150-600mm contemporary and am getting the same error.
Wtf could be happening? Is it just some strange tolerance issue with the sigma 150-600mm contemporary? This doesnt happen with any of my prime lenses or other telephotos.
