Re: [Leica] Leica Univ. Polarizer on 90 APO

["Tom Schofield" <tdschofield@email.msn.com>]

This does not work on the 21mm!  Based on another suggestion, I got a 55-72
step up, using a 72mm pol I already had, and drilled a "window" in the arc
of the step up ring that is visible in the finder.  It works great with wide
angle, and you don't have to flip the filter around.  I haven't tried it
with other lenses--you might need one custom made for each lens so that the
window lines up with the area visible in the finder.

Tom Schofield

- ----- Original Message -----
From: <InfinityDT@aol.com>
To: <leica-users@mejac.palo-alto.ca.us>
Sent: Tuesday, November 30, 1999 11:26 AM
Subject: [Leica] Leica Univ. Polarizer on 90 APO


> In a message dated 11/30/99 2:09:46 PM Eastern Standard Time,
> jplaurel@microsoft.com writes:
>
> << I wish there was a
>  way to use the flip polarizer with it, but I expect if they made the flip
>  pol large enough to accomodate this lens, it would interefere with the
RF.
>
>  --Jim >>
>
> If the 90 APO has the same E55 front mount as the non-APO 90/2 then it is
> entirely possible to use the Universal Polarizer on it.  I made an adaptor
> using info that was posted on the LUG a long while back.  If you have
access
> to a bench grinder or a Dreml tool and are handy you can make it yourself
for
> about $20 or less.  You start with a 55-52 step-down ring, then (using
> Loc-Tite) add a narrow 52mm ring from an old filter you've removed the
glass
> from; then you add a 52mm Cokin "A" adaptor on which the outer flange has
> been ground down to the same diameter as the other adaptors for the Univ.
> Pola.  (The reason for the 52mm reduction and filter ring is to allow the
> retaining screw of the polarizer to engage behind the adaptor flange.  If
> anyone is serious about wanting to make one for their 90 Summicron (APO or
> otherwise) I can e-mail a picture of mine.
>
> DT
>