P3D Re: setting to exact infinity

[bercov@xxxxxxxxxxx (John Bercovitz)]

>> for comfort in switching from one pair to the next, I sure like to have them
>> all at the same infinity setting.  To me, as a less experienced viewer, 
>> these sudden shifts when the projector goes from one setting to the next 
>> are a bit distracting.  Maybe not so much that it's right out there in-your-
>> face type annoying me, but it's enough that I feel more comfort in viewing 
>> slides where the infinity setting is consistent.

> Assuming, of course, that there is infinity in the pictures.  This is an
> important assumption because I have not seen many "mixed" shows where
> this is the case.  Usually there are plenty of tabletops, close-ups, etc.
> that come in-between pure scenics.

Actually, on my camera, I've notched the film gates at infinity so I 
always have a pair of points at infinity to work from.  (Is this guy 
a total nut or what!?)  However, if you are going to project and you 
have closeups, you are going to have your whole scene out in front of 
the window if you mount to infinity, at least if you use a normal 
stereobase as I often do (have to keep the total depth low in this case 
though).  The only cure for this is to mutilate the mount and put its 
apertures closer together, keeping infinity, seen or unseen, correct, 
and then project with very little overlap.  Not a pleasant thought, is 
it?  This would be a scheme which would project along the lines of double 
depth.  The window would most definitely be off the screen.  A person _can_ 
take a good thing too far.  8-)

John B


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