Archived posting to the Leica Users Group, 1998/01/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]David, the requirement for circular polarizing filters goes all the way back to the Leicaflex SL and has been required on all Leica reflexes since then. I think it's because of the light passing through the mirror and reflected downward to the photocell. The Japanese have taken a similar approach for their autofocus systems. Bud Cook - -----Original Message----- From: David Medley <dmedley@whidbey.net> To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us> Date: Monday, January 12, 1998 6:51 PM Subject: Re: [Leica] Polarizing Filter w/M6 -Reply >OK .............. let us empty the whole can of worms onto the table. > >I was told by someone ( I really forget who ) that a circular polarizer was >designed to work with the new ( 10 yrs.-? ) autofocus lenses and had >nothing to do with the metering system. Further, that a linear polarizer >would work just fine on the new lenses but that you might have a focusing >problem and should probably use them in manual focus mode if using a linear >polarizer. > >If true, it won't make any difference with the M-series unless someone is >holding out on us and there is a Noctilux that self focuses on the eyes >only in the dead of night ......................... but hell, we wouldn't >be using a polarizer then anyway ............ would we? > >Cheers, >David Medley >Whidbey Is. WA >USA >dmedley@whidbey.net > >---------- >> From: Bud Cook <budcook@ibm.net> >> To: leica-users@mejac.palo-alto.ca.us >> Subject: Re: [Leica] Polarizing Filter w/M6 -Reply >> Date: Monday, January 12, 1998 3:17 PM >> >> Michael, this is the old *swing out* polarizer that's nearly as old as I >am. >> It's not a circular polarizer but I'm now told it works OK with the M6 >> meter. >> Regards, >> Bud Cook >> -----Original Message----- >> From: Michael Schwartz <MSCHWART@wpsmtp.siumed.edu> >> To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us> >> Date: Monday, January 12, 1998 5:01 PM >> Subject: [Leica] Polarizing Filter w/M6 -Reply >> >> >> In my experience, all circular polarizers work OK with TTL metering. If >you >> are not sure if it is circular (e.g., if it is an older one), remember >that >> circular polarizers only polarize one way wnen you look through them, >> whereas linear polarizers, whick are said not to work with TTL metering, >> polarize both ways (from either side). >> >