Re: [photo-3d] listing of postal catalogue

["Robert J. Vaughan" <k0mz@xxxxxxxx>]

Sometime back a postal website was listed on photo-3d telling one how to
order a free 3-D stamp album.  I ordered one, received it the other day,
and found a comic style catalogue featuring superman and others.  A
discussion about 3-D movies is inside.  Included was a pair of
ChromaDepth (TM) prismatic glasses which tends to move the blue parts of
the images right and red parts left in the right image.  The left image
reverses the red/blue effect from that of the right causing the image to
have depth between the right and left images.  This causes the red parts
of the picture to appear closer than the blue parts.  Other colors seem
to hover between the red and blue parts.

Now, what is interesting is that I have myopia requiring a correction of
about -5 diopters and my glasses are made of the high index plastic which
are lighter and thinner than normal glass types.  The lenses I wear cause
the same prismatic effect between red and blue colors albeit to a lesser
scale than that of the catalogue ChromaDepth (TM) glasses.  So everything
I look at that has red and blue colors appears to have depth between
those colors similar to that of the Postal catalogue/glasses only less
so.  Red and blue neon signs at night can be rather striking to look at
through my correction glasses.  Red is always closer appearing than the
blue part of the image.  I've noticed this ever since I got the non-glass
glasses about 3 years ago.  (It is both fun and a curse.)

Now, my question.  Has anyone else with myopia (nearsightedness) who
wears these light high index type corrective glasses noticed this chrome
depth effect?  The effect does not span very many depth steps but it is
interestingly noticeable.

Robert J. Vaughan

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