[APML] Focusing the Mamiya and getting diff results

["Phillip Jones" <starfest@comcast.net>]

I am achieving three different focusing points with my Mamiya M645 using the
following three methods:

1) Tak FM60 with included ground glass against the film plane.
2) Tak FM60 placed on top of the focus screen after removing the prism.
3) Prism attached and Mamiya 2x magnifier attached to the prism viewfinder.

Each method brings me different results. I focused on an object 6 ft away
using my Mamiya 150mm lens. Camera was mounted on a sturdy tripod. Last time
I tried imaging with the Mamiya, I didn't yet own the FM60 and so I relied
on the prism + 2x magnifier. None of my medium format images came out in
focus.

For those of you unfamiliar with the FM60 focusing eyepiece, here is a link:
http://www.buytelescopes.com/container.asp?dest=/manufacturers/takahashi/fm60inst.htm

Question: should I go with the film plane result?

Thx,
-Phil

P.S. sorry for the cross post with Tak Yahoo group.


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