Re: Factoids from the Stereo Realist Guide

[P3D Dr. George A. Themelis <fj834@xxxxxxxxxxxxxxxxxxxxx>]

>>Tripod socket is at the exact center of the left lens
>> The wind release is at the exact center of the right lens.
>
>These help you to orient your Realist on a slide bar when you
>take close up shots with close-up lenses.


At first, I was happy to read this ("Aha!  Those Realist engineers really
knew what they were doing!") but when I tried to understand it, it did not
make much sense!

OK, say I want to use the Realist and close-up lenses.  I frame and take
the first picture with the left lens.  I then translate the camera to a
distance equal to (Realist Interocular) - (Desired Interocular) and take
the second picture with the right lens.  The interocular in this situation
is equal to the Desired Interocular.

Why do I need to know where the right lens sits?  So that I do not have to
remember the Realist Interocular?  And say, yes, I do not remember the 
Realist Interocular.  Why do I need a mark at the top of the camera 
(shutter release) to tell me where the left lens is sitting?  Can't I just
see the darn lens?!

>Anally retentive design engineers?

Yeah!  That must be it!!!! :-)

-- George Themelis


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