The guy was talking about unmodded cameras.No added filters in front of ccd. Some can focus through an IR filter namely cannon and apperantly pentax. Most Nikons cannot.
James > > That means he's added the IR filter in front of the CCD, AF is > unaffected by this on a DSLR (not so on a mirrorless) but it does need > to be adjusted for the offset between optical and IR photon focusing > distance. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

