Re: [photo-3d] Re: Camera separation in stereo photography

[Greg Erker <erker@xxxxxxxxxxxxxx>]

>As reguards to adecent stereo base, yesterday I shot a bunch of test shots
>with my Rolleidoscope  [ 75 mm lenses  , 65mm base shooting object which
>included infinity and anobject at 7 ft. and at 15 ft.. The 7 ft. shots gave
>a deviation of 2 or more mm. of deviation and were impossible for me or my
>friends to view with any viewer reguardless of focal length !

  I'll ask again Don, what is the lens separation of
these viewers?


>It causes me
>to believe that whoever put together the formulas referred to recently never
>bothered to test them out , especially as reguards  to 2.5 mm using MF .

  Lots of my slides have 2.5 to 3mm of deviation and
I can view them easily. So can other folio members.

  I remounted some of Bill Glickman's troublesome
slides (which have 5 or 6mm of deviation). I can
view them too though they do strain my eyes.

>Whoever put tis miss information out shoul offer their appologies. It is no
>wonder to me that I  reffered to the blind leading the blind ,that is the
>way it appears to me . I will send some samples toGreg E or insert them into
>the next folio.

  Don, 2.5 or 2.7mm OFD (in MF 3d) works for
the majority of people. So all I can think
is that you are in the minority who find this
to be too much, or your viewer lenses are too
close together, which makes you diverge your
eyes to view the far points.

  I look forward to seeing your slides.

Greg E.