Zos Xavius wrote: >Ricoh claims that the aperture mechanism used in the M/K series is not >accurate. My experience with green button stop down metering tells me >that there might be something to that given the liberal amounts of EV >compensation I end up using with various lenses. Oddly wide open >meters fine with the green button. Hmmmm.
With A-series and later lenses the aperture lever movement is linear with respect to aperture area; with the K and M series lenses the movement is linear with respect to aperture *diameter*, which makes them much more dodgy (and is why Pentax changed it in 1982). -- Mark Roberts - Photography & Multimedia www.robertstech.com -- 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.
