I suspect that's because you are moving the camera in between the two events. Try it with the camera on a tripod, pointed at something with a constant level of illumination.
On Fri, Sep 15, 2006 at 09:34:11AM +1000, J and K Messervy wrote: > On my DL, pressing the AE-L button causes the lens to stop down for a very > brief moment. If I then use the DOF preview to check the exposure, it has > not been set to 0.0. > ----- Original Message ----- > From: "John Francis" <[EMAIL PROTECTED]> > To: "Pentax-Discuss Mail List" <[email protected]> > Sent: Friday, September 15, 2006 3:47 AM > Subject: Re: K10D and Lenses with Aperture Ring > > > > On Thu, Sep 14, 2006 at 09:27:00PM +1000, J and K Messervy wrote: > >> The istDL doesn't have a green button, so I've found that I have to use > >> the > >> DOF preview lever to stop down the lens to get the right exposure > >> settings > >> in M mode. It works but is not quick or convenient. > >> > >> James > > > > I don't believe that's correct. Operating the DOF preview stops > > down the lens and turns on the metering circuitry, thus allowing > > you to check your exposure, but doesn't change any settings. > > > > Pushing the AE-L button (if you are in manual mode, of course) > > will stop down the lens, meter, and then set the shutter speed > > automatically to what the camera calculates for correct exposure. > > Once you release the AE-L button the lens opens up again, and > > the shutter speed stays at the last calculated value until you > > change it (either manually or by pushing the AE-L button again). > > > > Just get in the habit of a quick press of the AE-L button before > > tripping the shutter and you'll hardly notice the difference. > > > > > > -- > > 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 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
