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January 3, 2008 1:59 PM PST

Stereoscopy for your digital SLR

by Stephen Shankland

Loreo's lens for taking stereo photographs, shown here mounted to a Canon SLR.

(Credit: Loreo)

I have had a pet interest in the 3D photography technology called stereoscopy ever since my mom gave me a stereoscope of 19th century design for some boyhood birthday. Although the technology remains a small niche of photography, it is being adapted to the digital age.

I recently came across the Loreo 3D Lens in a Cap, a stereo lens that works on most film or digital SLRs. It's a 38mm lens with an f/11 of f/22 aperture that takes two images of the same scene from slightly different perspectives.

With stereoscopy, your brain can reconstruct depth information from the two images, just as it does with the two views from your eyes.

Loreo's 3D viewer

(Credit: Loreo)

Loreo also sells a basic $24 3D viewer into which you can put 4x6 printouts of your stereo photos. The lenses cost between $48 and $117, depending on what model you buy.

(Via Red Ferret.)

Stephen Shankland writes about a wide range of technology and products, but has a particular focus on browsers and digital photography. He joined CNET News in 1998 and since then also has covered Google, Yahoo, servers, supercomputing, Linux and open-source software, and science. E-mail Stephen, or follow him on Twitter at http://www.twitter.com/stshank.
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Add a Comment (Log in or register) (3 Comments)
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Glad to see this article
by 3D-Guy January 3, 2008 4:39 PM PST
I have been using the Loreo Lens on my Pentaz SLR camera for 3
months now and it is always my first lens to use. While I like it a
lot, it does have a few finicky issues, such as framing. It takes
longer to frame a scene than regular lenses, and often the "spur
of the moment" is lost. This is due to the split in the lens, and I
have difficulty with the right side.

Another issue is being able to show the images to a wider
audience, those that don't have access to special viewing glasses
(included with the lens). My work around is to make them
"anaglyph" (the red/cyan image and glasses) by using Adobe
Photoshop (hand done - there is no filter that I know of that
does this). The end result is that I can project my images and
everyone gets to see the 3D effect.

Overall, I am pleased with the results of this lens (I did have an
earlier version of the Loreo camera and tho it was fun, it wasn't
the best for shooting real 3D).
Reply to this comment
interesting--love to see your anaglyph recipe
by Shankland January 3, 2008 6:07 PM PST
I could make some guesses how you do it, but I'd love to see your recipe.
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About Underexposed

This blog sheds light on digital photography subjects such as cameras, photo editing, and Web sites. Shankland joined CNET News in 1998 after a five-year stint as a science writer. He's a lab rat who grew up in Los Alamos, N.M., and graduated from Harvard.

Contact Stephen at Stephen.Shankland@cnet.com

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