Nimslo close-ups.

[P3D Bob Aldridge <bob.aldridge@xxxxxx>]

->Date: Fri, 06 Sep 96 18:32:00 PDT
->From: P3D  Ivester, Paul  <ivestep@xxxxxxxxxxx>
->To: "photo-3d@xxxxxxxxxxxxxxx" <photo-3d@xxxxxxxxxxxxxxx>
->Subject: Close up lenses for Nimslo
->Message-ID: <3230D0A9@xxxxxxxxxxx>
-> 
-> 
->I am looking for a pair of close-up lenses (+2) that can be fit
->onto a Nimslo.  These lenses are very small, would Series IV work?
->I want to be able to have these permanently mounted on the two
->inner lenses without interfering with the outer lenses, so that
->it can be used for close-ups and "normal" shots without changing
->accessories.  I would then throw away either the inner or the
->outer pair.  I have tried using one large close-up lens over
->both the inner lenses, but it would interfere with the outer
->lenses, and might cause some convergence (divergence??) due
->to being off center.  I will try to contact Technical Enterprises
->to see if they can help, meanwhile, your advice would be appreciated.

Why don't you just screw the inner lenses out a bit? You'd have to take
some experimental shots to work out how far to go, and the lenses are
secured with glue in manufacture - but the mounts work quite well for
focussing (make up a wide screwdriver from a thin strip of steel and a
file...) 


->Speaking of Nimslo, I noticed that my Nimslo tends to underexpose by
->about 1/3 f stop.  Has anyone else noticed this?
-> 
->Paul Ivester
->Seattle, WA


Usually it's nearer to a full stop! Use neutral density filter over the
light cell to compensate. This will also, in fact, move the exposure
onto a straighter part of the cell's light sensitivity curve...

Best of luck

Bob Aldridge
Stereoscopic Society Projectionist
---
 * POW 1.3b 0007 * All those in favour of telekinesis, raise my hands.


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