Re: Realist notch, 3D CD, and Kodalux

[P3D Gregory J. Wageman <gjw@xxxxxxxxxx>]

Paul Talbot wrote:

>Hmmm.  I'm not an expert in camera mechanics, but I *think* that
>in a camera with properly operating, locking, sprocket-hole-fed
>film advance, the witness mark should appear in the same spot
>every time.  The only variation (as best I can logic-through in
>my strictly non-mechanical brain) should be due to film advance
>slippage.

I believe that to be true for any one particular camera.   However,
there are variations from camera to camera.  Where exactly the sprocket
holes are positioned is set by the position of the sprocketed wheel on
its shaft.  On the Realist, at least, the sprocket is held in place by
a set screw.  As I have multiple cameras, some of them produce witness
marks that are more reliably useable than others.  YMMV.

Yet another one of the many benefits of the RBT X2B is that the slide
sorting procedure is trivially simply.  The left slide is always higher
in number by two than the right.  One can simply take the numerically-
ordered slides out of the box as they come from the developer and place
them on a slide sorter like this: (1)R1 (2)R2 (3)L1 (4)L2 (5)R3 (6)R4
(7)L3 (8)L4 (etc.) to get correctly-ordered pairs (3-1, 4-2, 7-5, 8-6).

	-Greg W.


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