I normally use Back Button focusing, will that be the cause of the greying out? BTW on a Pc and using a Nikon D7100 with Tamron 90mm. Thanks.
Re: Auto focus greyed out.
Posted: 23.01.2018 13:13
by Stas Yatsenko
The AF is greyed out when the camera reports that AF is not enabled. I don't know whether or not it's your back button focusing setting that's causing it. Change the focus settings and see when the AF button becomes active?