Mamiya 645AFDIII focusing problem

Discussions regarding Phase One 645 AF and Mamiya 645AFDIII Camera

Mamiya 645AFDIII focusing problem

Postby NNN636452453518237846 » Wed Nov 21, 2018 9:26 am

Hello,

I have a problem with the AF of my mamiya 80 mm sekor D f1/2.8 objective on my 645AFDIII. I explain the problem.

I use it to focus on a object at let us 1.30m distance, the 645AFDIII has really problem to focus on AF. When I focus on an object at 2m, the focus is clean and relatively fast . At 1.30m, I am really above the minimum focussing distance of the objective.

When I load the objective on my DF+ (with a a P30+) back and I do the 1.30m test, the AF works fast and fine. This mean that the objective is not faulty.

As far as I know, I am using the same parameters on my DF+ and my AFDIII.

Is there a parameter that I would have missed on my 645AFDIII or worse a problem on the camera ?

Thanks for help , have a good day !
NNN636452453518237846
 
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