I may be using my M lenses too little. But I have never noticed any exposure problems - except for those caused by the well known "slow aperture syndrom", occuring when lenses are left unused for too long - or stored with open aperture blades (on a camera or otherwise).
I use a Seikanon wide angle macro lens quite often - which works like an M lens. It's an absolutely brilliant lens - which I believe is made by a company related to the later so well known Seiko brand. No exposure problems, that I know of. Razor sharp. Regards Jens -- Treat others as you would like to be treated yourself. On Sep 13, 2010 19:02 "Steven Desjardins" <drd1...@gmail.com> wrote: > I've never really used an M lens on a Pentax digital, but I'm thinking > about buying one. I know the green button trick, but how well does it > actually work? Metering OK and all that? > > -- > Steve Desjardins > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.