P3D Re: Realist Processing & Mounting

[jacob@xxxxxxxxxxxxxx (Gabriel Jacob)]

Mike Chew writes:
>>one sllde was pseudo and one slide had severe rotation error...

Just curious George asks:
>How about vertical misalignment?  Or incorrectly placed stereo 
>window? (like at or beyond infinity or too close to the camera)
>Should these be classified as mounting errors or not?

Well this is what Dr.T had to say on the subject just over a
week ago (see PHOTO-3D Digest 2711).

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A couple of comments:

1. Ghosting: I do not consider it a pure mounting error.  It is more
   of a projection artifact that can be made better with some mounting
   adjustments.  Those who only use a viewer cannot see it (but with
   some experience they can predict it.)  The adjustment to reduce
   ghosting is to bring the areas with the highlights closer to each
   other.  Of course, if the bright object is at infinity (like in the
   case of a sunset), matching the highlights on the screen means 
   putting the infinity right on the screen which totally messes up
   your stereo window...

2. There are mounting errors and MOUNTING ERRORS!  The "Kermit" slide
   was a close-up that was mounted in a normal (heat-seal cardboard
   mount).  As a result, the stereo window was off, resulting in
   "floating edges".  This can be fixed by pulling the chips away
   from each other and going to a close-up mount if running out of
   space.  What I consider a MOUNTING ERROR is vertical misalignment.
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Gabriel



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