Rangefinder Stereo Cameras

cvansas said:
Im working on something nice that could be interesting for owners of a Heidoscop with Plate film back or without back or a roll film back thats old and leaks. A 3d printed roll film back. The back has a complex geometry trapping the light in every corner, a perspex plate at the back that allows continuous vision on the frame numbers, a pressure plate that is also light trapped with a maze like construction. Im testing the prototypes and will hopefully show you the first results very soon!


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The design is finished ! Perfectly working no light leaks, added the registration to make 6 stereo views on one 120 roll instead of five. The only thing i want to change is to add a laser cutted plate with engraved frame numbers to the housing case and reprint that with an indent for leather finish.

The 3d files to print this version 2.5 can be found here:
cults3d.com

Heidoscop 120 roll film back (6x13)

This set of models is meant to make your own unique 6x13 roll film back for the heidoscop camera. Most of these camera's were equipped with plate backs and the free availability of 120 film makes the camera easier to use. This back has gone trough 24 design and print iterations and has been...
cults3d.com cults3d.com
 

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cvansas said:
The design is finished ! Perfectly working no light leaks, added the registration to make 6 stereo views on one 120 roll instead of five. The only thing i want to change is to add a laser cutted plate with engraved frame numbers to the housing case and reprint that with an indent for leather finish.

The 3d files to print this version 2.5 can be found here:
cults3d.com

Heidoscop 120 roll film back (6x13)

This set of models is meant to make your own unique 6x13 roll film back for the heidoscop camera. Most of these camera's were equipped with plate backs and the free availability of 120 film makes the camera easier to use. This back has gone trough 24 design and print iterations and has been...
cults3d.com cults3d.com
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Looks great - you mentioned that you’ll have detailed instructions added soon. When do you think you might have them added?
 
Vince Lupo said:
Looks great - you mentioned that you’ll have detailed instructions added soon. When do you think you might have them added?
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Dear Vincent, I was busy with other projects for the last weeks but will definitely catch up with this soon. Im planning to make a second version for the back cover that is finished with the same type of leather as the original heidoscop camera. Once those parts will have arrived I will finish the project up and create one full assembly tutorial and post it on youtube… so to be continued soon!
 
It's been a while since I shot any stereo images so I thought I'd finish off this roll of HP5 that had been sitting in my Duplex Super 120.

Really neat arrangement of the stereo pairs on the film -- 24 pairs measuring 24x24 each, running vertically along the roll of 120. I currently have this camera for sale but one thing I did notice is that one lens appears to be slightly 'off', meaning that one frame is a bit sharper than the other. I'm thinking if this camera doesn't sell that I'll hang onto it and send it out to be CLA'd and have that one lens calibrated to match the other one. It's a really nice camera and its compactness and operation makes it a breeze to use.


Duplex Stereo1 by Vince Lupo, on Flickr


Duplex Stereo2 by Vince Lupo, on Flickr


Super Duplex 120 by Vince Lupo, on Flickr
 
Chances are there has already been discussion about this....but what are your thoughts about the distance between lenses on the Duplex Super. I'm no expert (actually some folks seem to think I am) but they seem a bit close together.
 
rfaspen said:
Chances are there has already been discussion about this....but what are your thoughts about the distance between lenses on the Duplex Super. I'm no expert (actually some folks seem to think I am) but they seem a bit close together.
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I don’t have an a issue with it at all (but maybe I lack any kind of expertise to know the difference!). In general the images are pretty easy to line up and the stereo effect is fine, although I did have a bit of trouble with one pair of images in which the main subject was really close to the camera.

One thing I do have to look into is the left lens which seems a bit softer than the right lens. I was speaking with my local camera repair fellow here in Ontario and he thinks that perhaps that lens might be off by one tooth in its focus wheel gear. He’s never worked on one of these but he’s game to have a look.

I think it’s a great camera and if someone wanted an easy and pocketable camera that makes great stereo shots, this would be a good option.
 
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As a genuine non- expert, I have read about a relationship between inter-lens distance, focal length, format, and subject distance(s) that affect the "stereo-ness" of the resulting images.

An old experiment I did many years ago found that you can have lenses too close to each other to have much influence on typical subject images. Shocking!

Regardless, I think stereo is neat! Until recently I've used a fair bit of stereo imagery in my research/work.
 
rfaspen said:
As a genuine non- expert, I have read about a relationship between inter-lens distance, focal length, format, and subject distance(s) that affect the "stereo-ness" of the resulting images.

An old experiment I did many years ago found that you can have lenses too close to each other to have much influence on typical subject images. Shocking!

Regardless, I think stereo is neat! Until recently I've used a fair bit of stereo imagery in my research/work.
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That does make a lot of sense, though I don’t see any kind of reduced stereo effect with the Duplex images (do you see a reduced effect?) as compared to ones from my other cameras.

I think stereo is really neat too - it definitely makes you re-think how to compose an image and what makes for a ‘good’ stereo image. Having said that, it can be a bit of an issue posting shots online if people either don’t have stereo viewing devices (like those inexpensive Lite Owl viewers) or don’t know how to / can’t be bothered trying to learn how to ‘free’ view.
 
You have a point. I happen to have a multitude of viewers here because of my work.

The obvious solution is a book like Brian May does....viewer included 😬

There is such a thing as digital stereo. I once hired undergrads to sit at a computer with digital stereo photos (aerial photos) and fancy goggles to "manually" digitize (map) snag (dead tree) locations. Way cheaper than any other method my colleagues and I looked at. I think I still have the software and goggles around here somewhere. Doesn't help you with the current problem of sharing your images though.... Sorry I'm of no use.
 
I posted this in 2022: “I’ve been going through my stereo camera inventory and will likely be thinning the herd in 2023. Right now I have two Nil Meliors, one 6x13 Heidoscop, A 6x13 Voigtlander Stereflektoscop, the 6x13 Jeanneret Monobloc (also a panoramic camera), the 6x13 Tiranty Verographe (also a panoramic camera), the Revere Stereo 33 and the Lumiere Sterelux. Think I'll likely sell the Voigtlander, maybe the Heidoscop and the Revere. I think!”

As of today I’ve sold my Heidoscop, the Voigtlander Stereflektoskop, the Tiranty Verographe, the Revere 33 and the Lumiere Sterelux. All I have left now is the Jeanneret Monobloc, the Duplex Super 120 and the pair of Nil Meliors. I’d like to sell the Duplex and maybe one of the Nil Meliors and just be down to two stereo cameras. Or maybe sell the Monobloc and just be down to one — interesting how perspectives can change over time.
 
Interesting thread. I use to shoot a lot of stereo, I still have most of those cameras. I'll have to dig out some slides and scan them.
 
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