On Tue, Jun 8, 2010 at 3:27 PM, Mark Roberts <[email protected]> wrote: > Adam Maas wrote: > >>Your meter is calibrated for approximately 12.5% grey (ISO >>standard). > > I believe it's ANSI standard "ANSI PH3.49-1971" As far as I know it > hasn't been made into an ISO standard. Did I miss it?
ISO 2720:1974 and ISO 2721:1982 are the relevant standards although I suspect they don't mirror the ANSI standard so much as pick a similar calibration point. ANSI standards have essentially no bearing on the Photographic world, and they haven't since the early 1960's and the effective death of the US Camera industry outside of film production. The last real vestige was ASA ratings (important since Kodak remains a major film producer) but even that got swallowed by ISO standards. -Adam -- 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.
