[MF3D.FORUM:690] Re: Projecting MF Stereo

[Richard Twichell <rmt@xxxxxxxxxxxxxxx>]

Paul Talbot writes:

> So what is a P-11?  Could you talk a bit about your
> MF stereo projection experiences? 

Glad to - the P-11 is a Rollei slide projector, made I believe in the
'60s, which is designed to project 2 1/4 x 2 1/4 slides, and also
regular 2x2 35mm slides.  The two sizes of European style trays are
advanced simultaneously on opposite sides of the machine, and loaded
from the respective sides, so it is possible to mix the two formats
although refocusing is necessary.  Some of the machines are labelled
"Honeywell" although they are identical to the "Rollei" version.  

> When I mentioned
> the Mesa possiblity, questions were asked about what
> advantage projected MF stereo had over projected 35mm
> stereo.

Advantages are greater definition and more light-carrying capacity.  I
became interested in MF projection after seeing MF presentations at ISU
in Eastbourne and Paris.

Mounting: I have tried glassless mounts in the interest of economy and
am convinced glass is a "must" to keep the large chips in focus.  I lean
toward mounting to the window but will make adjustments toward mounting
to infinity if degree of parallax, ghosting, or contextual uniformity
issues warrant.

Sorry to hear there will be no MF at Mesa; however I can say with some
assurance there _will_ be MF at Buffalo.  I mention this as a challenge
to you MF stereographers:  Time to start planning, shooting and
assembling those shows!

Dick Twichell