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P3D Re: One more new product


  • From: Bob Wier <wier@xxxxxxxxxxxxxxxxx>
  • Subject: P3D Re: One more new product
  • Date: Fri, 13 Mar 1998 13:11:00 -0600

|
|There are other reasons it won't work with a realist.  It's probably
|designed to have an 8 perf. CCD array centered behind a single lens, not
|two 5 perf. CCDs at Realist separation.  It should, however, work with a
|splitter.  Now all we need is a "keystone correction" filter for Photoshop ...
|
|-pd
|
|

Ah yes. Well, assuming that everyone was using the same system, and
since you can do keystone correction with "skew", setting up an action
series wouldn't be too difficult.

Just as a side note - I once was working on a circa 1900 print for
a colleague of an ancestor's family standing outside their new 
Victorian house. The lens on the camera apparently was fairly
wide angle as there was noticible keystoning. So I reversed it, 
lining up the sides of the building so they were parallel. However
the first time, I miscalculated and got DOUBLE the displacement I should
have. 

It's remarkable how sensitive the eye is to "reverse camera keystoning"
with things (like buildings) being wider at the top than at the bottom.
That is, of course, the traditional shape of a keystone...

THANKS

              Bob Wier
     mailto:wier@xxxxxxxxxxxxxxxxx
   1:10 PM Friday, March 13, 1998
   Rocky Mountain College, Billings MT.
 keeper of the Photo-3d and Overland-Trails
mailing lists and the USA GPS Waypoint server



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End of PHOTO-3D Digest 2628
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