I agree with you, there is no reason why the shutter Speed MUST stay locked ( although that should still Remain an option) after taking a reading. But the Easiest and best solution is to just put the cam Sensor back in their because it solves all the AE Issues and avoids stopping down the lens altogeher. jco
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Cory Papenfuss Sent: Monday, October 09, 2006 11:13 AM To: Pentax-Discuss Mail List Subject: Re: k10d and manual-aperture lenses? QUESTION (fwd) > No, there's a good reason for it: The matrix metering algorithms need > to know not only the maximum aperture of the lens (which it gets from > the ID Insulators, but also the actual shooting aperture, which it can > determine from the non-linear movement of the diaphragm actuator arm on > "A Series" and later lenses. > Ah... my bad. The cause/effect is a bit off though, no? The non-linear movement of the diagphram arm is what the *body decides* to do if A or later. The shooting aperture is determined from the aperture simulator in K/M/A-in-non-A. I still say the "green-button" trick could be made to work better and allow these things, even without the aperture simulator. If one could manually set the max aperture of a K/M lens, the body would know. Hitting the green button could then be used to compute the *difference* between wide-open and shooting. Then you'd only have to hit the button if you change the lens aperture... not if the lighting changes. -Cory -- ************************************************************************ * * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering * * Virginia Polytechnic Institute and State University * ************************************************************************ * -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
