Re: Twin SLR questions

[Joel.Alpers@xxxxxxxxxxx]

Stephen Kearney writes:

#I'm thinking about trying some twin SLR work. Before I do, I'd like to make
#sure I have the viewing options fully understood.
#
#Is it correct that I can view the stereo pair by:
#
#1.  Mounting the the chips in a European format mount (7-perf) and viewing
#in my Dr. T - modified Red Button. This would eliminate some of the higher
#resolution full-frame 35mm would offer.

It does eliminate some, but it also gives you more room to set the
stereo window. Also, I carry RBT and cardboard mounts in 31.5 (and RBT in
in 33mm widths), though I don't think the Red Button can be widened
out _that_ much 

Dr. George, have you ever tried going beyond European format in your 
viewer modifications???

#2. Viewing in a 2x2x2 viewer, and losing the precise alignment a stereo
#mount provides.

True, but you can see the whole thing ;)

#In the balance I'm not sure twin-SLR stereo has much over using a Realist,
#except for hyper-stereo ability.

Other thoughts:

  You can use print film and a ViewMagic.

  You can project twin-35mm in 2x2 mounts using two projectors.

  There's always the option of building your own viewer. If you are using
  two cameras with "normal" 35mm lenses (i.e. 50mm focal length) you can
  go to 50mm viewer lenses. A longer focal length lens can perform much
  better as far as lens coverage, color distortion, resolution, etc. 
  compared to the shorter focal-length optics (such as a Realist viewer).
  This is not a slam on Realist viewers, by any means - it's just a fact
  that viewer design problems get _much_ easier as focal length gets 
  longer!


Joel Alpers
Rocky Mountain Memories - Equipment and Supplies for the 3D Photographer
rkymtmem@xxxxxxxx
http://www.frii.com/~rkymtmem


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