On Wed, Nov 13, 2013 at 5:04 PM, Matthew Hunt <m...@pobox.com> wrote: > Only the effect on metering, not on light reflecting onto sensor > during long exposures.
You know, I 've been trying to picture how that even happens. I can understand how light from the viewfinder might affect the exposure. After all the mirror is still down while metering, right? So if your eye isn't at the viewfinder, it is possible that it could be bouncing around in there and affect the meter. But this problem? The mirror is UP, during the exposure. So that implies that the mirror does not fully cover the screen on the bottom of the pentaprism. Light, coming from the viewfinder (crack between the mirror and the screen???) must reflect off the back lens element (or goes through the lens reflects off the dark filter and comes back at the sensor?). That's the only thing that I can picture. If someone has an alternative explanation, I'm all ears. -- 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.
