Re: 24mm R lens + polariser?

[Jim Brick <jimbrick@visualimpressions.com>]

At 12:37 AM 12/13/96 +0000, you wrote:
>
>I now have a Heliopan series 8 circular polariser to put in the lens
>hood for my 24mm R lens. The wheel on the outside of the lens hood
>should rotate the filter inside. In practice it does do so, just about,
>but with such extreme difficulty and stiffness that it really is not a
>practical proposition. I don't intend to pay UKP 200.00 for a Leica
>circ. pol. and I do wonder if that would have been any better
>mechanically anyway. As far as I can see, in order to use a polariser
>with this lens, I will have to [1] get a 60mm wideangle polariser with a
>normal rotation system using a front ring, and just forget about using
>the lens hood at the same time. Or [2] dig out the 60mm adapter ring
>I've got somewhere for the Cokin P holder and use a Cokin polariser,
>assuming that it doesn't vignette. Anyone have experience of
>(successfully) using a polariser with this lens?
>-- 
>Joe B.
>
>
Joe, I've used the Lieca series 8 polarizer with lens hood and for fifteen
years have had no trouble rotating the filter with the wheel. I'm not sure
why??? The Leica polarizer has a yellow dot that is supposed to face the
dot on the lens hood. I'm not sure if that is for the mechanics or for the
polarization. Anyway, mine has always worked and without any great amount
of pressure. I also have a B+W 62EW circ pol that I use on the 24mm (with
B+W 62-60 reducing adapter). With this I can screw in a B+W 82EW KR-3 or
KR-6 if I need a warming filter in addition to the polarizer. The outside
thread of the 62EW is 82mm. I have been using the above for many years with
no problems. My opinion is if you use a Cokin setup, you probably should
opt for the Tiffen glass pol that fits the Cokin-P holder rather than the
Cokin plastic filter. Glass won't scratch, is flat, and easy to clean. The
problem is that the square Tiffen filters are not "circular." I know
nothing about the Cokin filter except that it's resin (plastic.)

Jim