>>2885117>>2885121Also this was made with the manual focus version of the Sigma 400/5.6, it is capable but don't expect any digital miracles. It is a film era design.
>>2885123Don't worry, AF will not fuck you over. I recently got a Bigma and have used it's AF a lot but with my manual focusing experience I can always step in to correct focus or put it where I expect the subject to be without any problem.
The old AF 400 won't have the clutch mechanism so you have to switch into MF proper before touching the focusing ring.