No, it's the same for all lenses, there is no additional blackmagic for alt f2 ;)
Maybe if you can get a step by step that you can reliably produced + a small video, (and just write in the report at which second you press enter), that will help to see exactly what happens to you :)
No, it's the same for all lenses, there is no additional blackmagic for alt f2 ;)
Maybe if you can get a step by step that you can reliably produced + a small video, (and just write in the report at which second you press enter), that will help to see exactly what happens to you :)