I had to rent a phase one camera to replace my broken afd 1 body for a job recently and I really didn't like it, I found the focus to be no quicker than the afd 1 and also it searched more, everyone complains about the afd auto focus but I love it, it's not the fastest but it's dead accurate and it never searches, it's very predictable. Also the difference in shutter lag between the 2 cameras was something I couldn't perceive, not that I was testing it, I was just using it on a pretty high pressure ad campaign on the street. Suits me down to the ground though, Mamiya afd's are cheap as chips and I love them.