P3D optics of stereo viewers [resend^2]

[erker@xxxxxxxxxxxxxx (Greg Erker)]

{got lost in space again I guess}

>In the most recent Edmund's Optic Catalogue, they list (p 117) a 6x
>wide/flat field viewer specifically designed to view single 8 perf
>(stated FOV 1-1/2") chromes with a coated double achromat optical system
>for $80 (quantity procing available). Slightly longer FL (about 47mm),
>but looks like it might fill the bill for a lot less. Lenses already
>mounted in a threaded black anodized aluminum cell w/lock ring...

  I've seen one good coment about it on the
internet somewhere (photo.net I think) so
it may be a good candidate.

  On the other hand, Edmund claims great things
for their Hastings magnifiers and John B and
Joel's ORT program both say that they are very
poor (at least not wide FOV as they claim.)

  So YMMV.

  Me, I'm presently playing with the double
achromat lenses like Alan Lewis has ( 36 mm
dia by 50 mm effective FL when paired, $8 ea
x 4 = $32  from Surplus Shack). Much cheaper
and they work nice when I wear my glasses
and still allow me to see an entire 7 perf
slide. Some pincushion, so Larry wouldn't
like them :)

Greg E.



------------------------------