P3D tintype stereoviews

[John Saddy <john.saddy.3d@xxxxxxxxxxxx>]

I unfortunately missed photo3d #2555, so I didn't see the original entry
about the stereo tintypes. (My server is restructuring, and I lost some
e-mail, apparently permanently. If anyone sent a weekend e-mail bid for
either of my auctions, and didn't get a response, then I didn't get your bids.) 

I apologise in advance if I am repeating what has already been covered, but
I've handled some stereo tintypes in my auctions, and I know a bit about them.

If the stereo pair is in one piece, and the images are pseudoscopic, that
indicates it to be what I call an 'accidental' stereo. The dimensionality of
these accidental stereos, when they are separated and placed in proper
position, is weaker than what we usually see in a stereo image, as the
lenses are closer together on those kind of cameras than a stereo camera.

If, however, the images are on one piece of metal, and are in PROPER stereo
viewing position, and with at least typical strength of dimensionality, then
I would suspect it may well be an authentic stereo tintype, made for that
purpose.
There were also tintypes sold in tissue-view-like mounts, with two separate
pieces of metal. These must be examined carefully, as there is the
possibility of fakery, using an accidental pair and a tissue-view mount.

John Saddy

>From the Jewel of the Western Hemisphere, London, Ontario, Canada


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