Maximum filter size for Mamiya 6

Anybody know off-hand what the maximum usable filter diameter is on
the Mamiya 6, assuming an appropriate step-down ring, of course? 67mm
will obviously be fine as that's what the thread on the 150mm lens is,
but how about 77mm? Will that get in the way of the meter, rangfinder,
etc.?

Thanks.

--
David Evans
Ph.D. Candidate, Computer/Synth Junkie http://bbcr.uwaterloo.ca/~dfevans/
University of Waterloo "Default is the value selected by the composer
Ontario, Canada overridden by your command." - Roland TR-707 Manual

From: (David Evans)

Anybody know off-hand what the maximum usable filter diameter is on
the Mamiya 6, assuming an appropriate step-down ring, of course? 67mm
will obviously be fine as that's what the thread on the 150mm lens is,
but how about 77mm? Will that get in the way of the meter, rangfinder,
etc.?

I have the 7 II instead of the 6 so not directly applicable, but for sure on
the 7 II a 77 mm filter would be no problem, since the lens hoods on several of
the lenses are *much* wider than this. These hoods block part of the
viewfinder view but not the metering.