[MF3D.FORUM:299] Re: New addition to MF viewer gallery

["Bill Glickman" <bglick@xxxxxxxx>]

I have a few questions regarding MF stereo, any input would be appreciated..

1.  Taking stereo shots requires lenses that are identical fl's.  I have
read that slight differences in fl can alter the stereo effect.  Does this
mean lens of different fl, such as 80 and 78mm, or can it also mean the tiny
differences between two 80mm lenses from the same maker.  Although they
would be very close, they can still vary slightly... the book did not
identify how tight lens tolerances need to be.

2.  My new 6x6 stereo mounts from RMM has one side of image area larger than
the other.  Does the larger window side mount closest to the viewer lens or
does the smaller window side mount closer to the viewer lens?

3.  What type of tape is used to tape the mount closed.  I noticed on some
mounts are taped closed by a silver type tape.... what is this, and is it
necessary?  If so, where is it purchased?

4.  Stereo cameras with fixed lens positions are quite popular.  However,
based on the formula  (1/30) for determining proper lens spacing based on
subject distance, it seems stereo cameras with 65mm spacing are best
utilized for shooting close subjects.  If you are shooting subjects 20 feet
away, it is better to use a dual camera rig in which the lens spacing is
further apart to as per the forumula.  This of course leaves out the
variable of both shutters firing simultaneously, which is a photographic
consideration based on movement.  My question is, is this completly right?
If so, I imagine a dual camera rig on a slide bar with dual cable releases
would be the best all around option for shooting a wider variety of
landscape scenes vs. a fixed stereo camera.  Right?  Were these fixed stereo
camera primarily made for protrait shooting?

Thank you..
Regards
Bill