[KOML] Polarisers

[Clive Warren <Clive.Warren>]

At 9:04 am -0600 28/11/97, Mel Brown wrote:

>Clive Warren wrote:
>

>> ...For the
>> Rapid-omega it is probably easier to use a Cokin or similar sqaure filter
>> given the hassle in trying to work out relative rotations of a glass
>> screw-in polariser.  Anyone have experiences that they would like to share?


>A polarizer, whether screw-in or not, is mounted in a ring that rotates
>independently of the screw-in threads. That's fine for an SLR, but is a
>concern
>for RF and TLR cameras because it is not possible to see the effect of the
>filter while it is mounted on the lens. One would have to remove the filter to
>orient it as desired, note its rotational position, then screw it into the
>lens,
>then re-establish the noted orientation. Clunky, but workable.

Does anyone have views on the quality of various types of polarisers? I
will probably be scouting the secondhand shops this weekend for P-Mount or
similar and buying a new polariser to fit together with adapting rings for
the various Rapid-Omega lens. There are a lot of different manufacturers
producing polarisers that will fit the P-Mount.  Any pointers would be
appreciated.

Up to this point I have always used glass with other camera systems.





All the best,

              Clive   http://clive.bel-epa.com