Re: [photo-3d] Polarizes (was: Fast film in old cameras plus FEDS)

["John A. Rupkalvis" <stereoscope@xxxxxxxxxxxxx>]

----- Original Message -----
From: "Eddie Bowers" <eddieb@xxxxxxxxxxxxx>
To: <photo-3d@xxxxxxxxxxx>
Sent: Tuesday, January 09, 2001 2:43 PM
Subject: [photo-3d] Polarizes (was: Fast film in old cameras plus FEDS)


> This brings up something i'm curious about. How does everyone else deal
with
> polarizes on a non-SLR camera?
> I have a system that works however it's a little clumsy with 3 polarizes
> (one that stays in my pocket to look through) with degrees marked on them
> that I match up. I even rigged something to work on my View-Master camera.
>
> How does everyone else do it?
>
> -Eddie
>
Several years ago, Kodak, and some others (possibly Tiffen?) made polarizers
for rangefinder cameras.  These had a little post on one part of the ring
with a smaller polarizer attached.   When you rotated the main polarizer,
you would then look over or around the camera through the small "viewer"
polarizer to judge the effect on the scene.  I think these were discontinued
when SLRs became so popular.  It may be still possible to find these at swap
meets, etc.

Your method sounds good.  Only, instead of a pocket, why not tape the third
polarizer over the viewfinder window?   Since you have indexed all three,
you could lift the tape, rotate it to the angle you want while looking
through the viewfinder, then tape it down and turn the other two to match.

A larger diameter disc, perhaps about 6 inches (150mm) or so might cover
your viewfinder and the taking lenses as well, simplifying and speeding up
the alignment: when it looks right in the viewfinder, it would be right for
the film.

At one time, polarizing discs about this size, already mounted in rotating
rings indexed in degrees, were available from Edmund Scientific and other
optics and surplus outfits, as well as from science supply companies that
sold them to science and physics labs in high schools and universities.

JR


> -----Original Message-----
> From: Ted Kraegen [mailto:e.kraegen@xxxxxxxxxxxxxxxxxx]
>
> I had a recent experience where polarizers saved the day - while on a
> six week trip with my FEDBOY the auto setting stopped working...
>
>
>
>