The FA lenses also tell the body to what distance they are focused. Perhaps his lenses are at infinity?
Rick http://photo.net/photos/RickW ----- Original Message ----- From: William Robb <[email protected]> To: Pentax-Discuss Mail List <[email protected]> Cc: Sent: Thursday, January 31, 2013 6:51 PM Subject: Re: I don't understand ----- Original Message ----- From: "Collin Brendemuehl" Subject: I don't understand > When I put either the FA28/2.8or the FA50/1.4 and use either the > internal or a shoe-mount flash, the shutter speed goes to 1/25. > But when I use an "A" lens it goes to the desired 1/180. > Why? The FA lens supplies more information to the camera and allows dynamic shutter speed adjustment when using flash. A series and earlier don't supply such niceties, and so the feature is disabled. I suspect Pentax could enable it if they desired, the A lens does transmit aperture, which is all that should be required, but they want to sell new lenses, and so disable some features. William Robb -- 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. -- 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.
