beecher@sdcrdcf.UUCP (J.P. Beecher) (08/27/83)
Does anybody know any details about type, price, specs, and availability of stereo (3D) type slide cameras. These are the kind that take GAF viewmaster type pictures or use 16mm or 35mm slide type film. I looked at a Nimslo but they only take 3D prints that in my opinion are kind of funky. Thanx, J.P. Beecher
hds@nbires.UUCP (08/31/83)
Pentax sell an attachment that allows their 35mm lenses to be used for this purpose. hds.
hoyt@hao.UUCP (Douglas Hoyt) (09/01/83)
The GAF viewmaster slides are about 12x12 mm in size and are commonly mounted on a circular wheel to be seen through a Viewmaster viewer (or less commonly projected). The cameras take 35mm slide film. Better stereo slides can be obtained using a Stereo Realist camera which also uses 35mm film but produces 24x24mm slides, the pair being mounted by Kodak or other companies. Other cameras imitate the Stereo Realist and were introduced as copies mostly in the early 1950's. I seem to recall that Kodak still develops and mounts about 4 million stereo slides per year in the U.S. Because these stereo slides are larger than the Viewmaster slides, I think they are superior. Shutterbug Ads is a good place to find stereo cameras for sale. The Nimslo camera is primarily for prints but the outside pair can be used for slides if you do your own mounting. The National Stereoscopic Association publishes StereoWorld and this magazine is an excellent place to find information on current developments (equipment, movies, etc.) as well as the history of stereo photography. I have been taking stereo pictures for about 10 years now. Is there anyone else on the net that shares this interest?
wally@cornell.UUCP (Walter C. Dietrich) (09/02/83)
Does anyone know how the Nimslo process works? I know how stereo Organization: Cornell Computer Science Lines: 3 viewing usually works, but I was wondering how they made the prints and how many negatives they use for a single picture. (I know you have to have two, do they use more?)
jeff@tesla.UUCP (09/05/83)
The Nimslo records four images per stereo picture, which are then printed on four interleaved strips on a lenticular print. In other words, the Nimslo print (which is thicker than ordinary prints and has a plastic rigidity to it) contains images from multiple viewpoints. These strip images are so set into the print that they are visible at slightly different angles, thus giving the impression of depth as the observer`s head is moved. Kodak published a 3D print made this way (pre-Nimslo) on the cover of one of its annual reports a few years ago, and there were trials of a similar movie system, using a lenticular screen, in the USSR about twenty years ago. JF
jwcross@pur-phy.UUCP (J. W. Cross) (09/24/84)
I recently bought a Stereo Realist that takes 35mm stereo slides. Although I have a viewer, I would prefer to have one of the original Stereo Realist viewers. If anyone knows where one is available or would know where any ohter stereo equipment is available(slide projectors,etc.), please let me know. j. w. cross
woods@hao.UUCP (Greg Woods) (06/25/85)
I am sending this for a friend at NCAR who is not on the net. Here is the
text of his reply. If you reply by mail to this article, please make sure
you note in the subject that it is intended for Doug Hoyt, and I will route
it to him over our internal network.
=============================================================================
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Sender: HOYT
Date: THURSDAY 06/20/85 13:17:59 MDT
From: Doug
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There are several possibilities for stereo cameras. One must
consider viewers for these cameras, so I mention that where needed
too.
1) Stereo Realist camera.
These were designed in 1942 by Seton Rothwite and manufactured
from 1947 through the mid-fifties. They cost about $100-$150
each on the used market. Many clones of these cameras exist by
other companies made during the fifties, but they are of lower
quality generally. This camera is still the most commonly used
stereo camera.
Images are about 24mm by 24mm from 35mm film. Kodak and other
places develop and mount them. The lens is f/2.8 but generally
I keep it at f/22 for depth of field and expose ASA 25 film at
1/25th of second in sunlight. Stereo images to about 3 ft. can
be made, although a special version of this camera for macro
stereo exists for images at 4.5 inches (costs is $1200 and very
difficult to find). It is a rangefinder camera.
2) Nimslo
This is a four lens rangefinder designed to give prints. Result
are only fair in my opinion. It uses 35mm print film and can
focus to about 6 ft. The latest camera magazines sell them
for about $25-30 dollars each. There is some question whether
the Nimslo camera company will remain in business.
3) Burdlo
David Burdlick in England modifies the Nimslo camera to give
a two lens camera with about a 56mm separation (vs. 70mm for
Stereo Realist and eyes). It can be used to take pictures of
objects as close as 9 inches. Frame size is 24 by 35 mm so one
needs a different viewer to use it. I have the camera on order
for a cost of about $350 and need to find a viewer so I can't
comment further.
4) LEEP camera system.
This camera uses 120 film to produce wide angle stereos (about
140 degree field of view). It comes with its own viewer and
mounts and now sells for $1245. Eric Howlett who makes these
has sold about 50 of them. I have one on order (for the last
4 years actually) which is due late this month. A disadvantage
of this camera is that the images are distorted and thus cannot
be used for prints. Since this camera has been under
development for 4 years, delivery has been delayed but should
be better now.
For someone new to stereo photography, the Stereo Realist is the
best way to go. I can locate addresses of places that sell these
if someone else doesn't give you them.
Douglas Hoyt
NCAR, Boulder, CO
(not really on the net)
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--
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!hao!woods
CSNET: woods@NCAR ARPA: woods%ncar@CSNET-RELAYmichaelk@azure.UUCP (Michael Kersenbrock) (07/01/85)
I'm not sure what brought up stereo cameras, but an inexpensive way to fool around with "them" is the way I did. I bought the "Pentax Stereo Adapter Set" that screws onto the front of my camera's (a Pentax Super Program) normal lens -- like a 49mm filter. The adapter has front-silvered mirrors with a separation of 7 cm., and comes with a viewer. It costed me something like $30 that I recall. I special-ordered it through JAFCO (A BEST-PRODUCTS company). It makes two half-frame pictures on the 35mm slide which you put into the viewer. I haven't played with it for some time, but I think I will find it & dust it off.... Mike Kersenbrock Tektronix Software Development Products Aloha, Oregon P.S.- As I recall, the adapter worked pretty well (with constraints, such as you needing to stop-down exposures to f5.6 or f8) so long as the slide developer guys mount the matched-pair half-frames into the same slide! (Yep, you guess right on how I found that out!)
woods@hao.UUCP (Greg Woods) (07/04/85)
Once again, I am posting this for Doug Hoyt. I do not read this newsgroup.
As long as the traffic volume doesn't get out of hand, I will accept mail
and forward it to Doug via our local network. Be sure you mark it in the
subject as intended for him.
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Subject: Stereo cameras: addresses and info.
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Used stereo cameras can be obtained at:
1) Stereo Photography Unlimited
8211 27th Ave.
St. Petersburg, FL 33710
(This is probably the best source nowadays.)
2) Olden Camera
1265 Broadway
New York, NY 10001
(A little bit more expensive than the above, but they have
more really old stereo cameras for collectors.)
3) Also look at Shutterbug Ads and if you are lucky your local
camera store may have a stereo camera.
Other important addresses for stereo photographers are:
1) Reel 3-D Enterprises
P.O.Box 35
Duarte, CA 91010
(They stock all presently manufactured goods, such as mounts,
viewers, projectors, books, etc.)
2) National Stereoscopic Association
P.O.Box 15801
Columbus, OH 43214
(They publish Stereo World, a great magazine that keeps you
up-to-date on new developments plus they have many historical
articles with lots of reproductions of old stereocards.)
Finally I would like to make a special mention of the LEEP camera
system (Eric Howlett, Pop-Optix Labs, 16 Berick Rd.,Newton Centre,
MA 02159). This camera is designed to give wide angle stereo
views - in fact, everything you see will be included in the
picture as you see it. The view you see will not be cut off by
edges of the picture as in normal stereo views. Potentially I
think this will be one of the more exciting camera developments
in recent years.
Douglas Hoyt (NCAR)
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CSNET: woods@NCAR ARPA: woods%ncar@CSNET-RELAY