The early Pentax DSLRs had IR cutoff filters in front of their imaging sensors that nevertheless transmitted enough near IR light to make a useful IR exposure with an R-72 or similar filter. Can you assert that the IR cutoff filter over the AF sensor is more absolute in its prohibition of IR light than the filter above the imager? If not, my suspicion about IR contamination of the AF system is not answered.
Regards, Anthony Farr > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > Carlos Royo > Sent: Monday, 25 February 2008 8:14 PM > > > AFAIK, the AF sensors in Pentax SLRs (and other brands too) have a > built-in IR filter. It is clearly shown in the AF sensor schematics in > Bojidar Dimitrov's K mount page: > http://www.bdimitrov.de/kmp/technology/AF/index.html > (that is the SAFOX IV sensor). > > Carlos > -- 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.
