Stereo Images From Juneau

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MF Cameras
Stereo Mounting
MF Viewer
Digital Twins
Stereo Help
Stereo Methods
TDC Stereo Vivid
NSA 2004


I have included file sizes in the image links.  Please take a moment to check these sizes before you begin downloading images for viewing.  Several of the JPS files are very large and will be painful to download over a modem link.

The images are presented in cross-eye and anaglyph format.  If you prefer a different format or size, please give the Stereoscope applet a try.

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Java Stereo Viewer

Many of these pages use a Java Stereoscope applet by
Andreas Petersik
. It made a Java convert out of me and I highly recommend it.

Up ] A5 Story ] A100 Story ] A200 Story ]

Why bother with a twin?

My A5 on my plywood slide barWith a slide board and a single camera, you can create stereo pairs.  This is ok for still-lifes, but any motion between the two exposures leads to flickering in the final images.  With the long cycle times of digitals, flicker from moving leaves, birds, mice, and people is very likely.  The solution is to capture both images at the same instant.  

Capturing two images at the same instant  requires two shutters, two apertures, two lenses, and two "film planes".  In the film world, stereo cameras have been made for years, and there are many models from which to choose.  Unfortunately, there are not yet any digital stereo cameras on the market.  If you want a digital stereo camera, you will have to build it yourself.  Inspired by notes I've found for twin Olympus XA, a Kodak DC-20 twin built by David Grenewetzki, a DC-20 based stereo camera by David Burder, and (later) a Kodak DC3800 twin built by Masayuki Iwata,  I chose to "twin" a pair of cameras rather than trying to build an honest-to-goodness stereo camera.  Using one controller to perform focusing, metering, and shutter control would result in the best possible images.  It's much easier to grab a couple of still digital cameras and fire them at the same time.  If they are both the same cameras, their metering and white balance should come out fairly close to the same.

What camera to use

For my first twins, I chose to use a pair of Canon A5 compact digitals.  The A5 was introduced in 1998 and operates at resolutions of either 1024x768 or 512x384. For my second twin, I chose to use a pair of Canon A100 compact digitals.  The A100 was introduced in 2002 and operates at resolutions of 1280x960, 1024x768 or 640x480. For my third twin, I moved up to a pair of Canon A200 compact digitals.  The A200 was introduced later in 2002 and operates at resolutions of 1600x1280, 1024x768 or 640x480.
Built late in 2000 - In retirement Built 7/02 - Lost or stolen Built 10/02 - In use
The twin A5 story The twin A100 story The twin A200 story

A5 Version 1.1
Front view of first twin Rear view of first twin

  • narrow wooden mounting rail
  • 1/8" jacks
  • solid core wires
  • separate handle

A100 Version 0.9
A100 twin before the gluing (65759 bytes)

  • "packable" form factor
  • strictly portrait orientation
  • fixed spacing
  • no external jacks, wires, or switches
  • rubber band tension members

A200 Version 1.0
Front view of twin A200

  • Higher resolution than A100
  • Precision alignment
  • All other features of the A100 twin

A5 Version 2.0
Front view of second twin Rear view of second twin

  • extruded aluminum rail
  • stranded core wires
  • molded 1/8" plugs with strain relief
  • tripod mount
  • attached handle

A100 Version 1.0
A100 twin from the front A100 twin from the back

  • 3M 5200 adhesive
  • not quite right alignment

A5 Version 2.1
(Not Pictured)

Version 2.0 with the following additions:

  • third mounting hole for left hand camera to allow for very hyper stereo pairs
  • integrated wrist strap on right hand camera
  • integrated spirit (bubble) level under the rear edge of the bar, aligned with the right hand LCD
  • thumb screws to hold the cameras to the bar
I no longer have my twin A100.  I accidentally left it in the trunk of a rental car in Burlington Vermont.  By the time I called back (three hours later) the car had gone back out and the camera was never seen again.

If you see my twin somewhere, please let me know.  I miss it.

Up ] A5 Story ] A100 Story ] A200 Story ]

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