I've suggested this before, but I dont think Pentax was listening.... Or they were, but are sticking with the GB thing so that they can sell more lenses. ;)
rg [EMAIL PROTECTED] wrote: > I think you're being too complicated. How about this. Call it auto > stop down compensation > > 1.) Mount a K lens. Or take an A/F/FA off A position. The Camera > automatically senses this. > 2.) Set the mode dial to Av, if it's not there already. > 3.) Press the green button. > a) The camera takes a meter reading and temporally records it. > b) The lens stops down to taking aperture and makes a reading > subtracting the EV value from the temporally stored value. > The camera now knows the difference between wide open and > the current F stop set on the lens. > > Now every time you take an exposure the camera calculates the proper > exposure based on that offset. (It and also display an estimate of over > or under exposure in the viewfinder). > > No extra dials or buttons to press. If you change the aperture you get > instant exposure compensation. > > If you change aperture and don't want exposure compensation press the > green button again. > > Make this type of operation a menu item in the custom menu with a > default to the Av behavior. > > Basically an aperture simulator for Av all done in software. > > The only problem is that you might run out metering range, but that's > true of using the green button Kludge now anyway. > > Cory Papenfuss wrote: > > >>>>Of course it's academic since it's not an option with the current >>>>firmware, but I don't think it would be too bad. The +-EV only works >>>>within 3 EV from wide open, and even then you have to do the math of how >>>>many stops you are from wide-open. >>>> >>>> >>> >>>Or 6 if you calibrate on 3 stops up from open-aperture. I have done >>>it, Cory, it's a pain, even without having to go into a menu to >>>indicate the aperture. >>> >>>Kostas >>> >>> >>> >> >> I still think that's more confusing than what I'm thinking. The >>most annoying thing is having to set (somewhere) the maximum aperture of >>the lens... I'm thinking a "button+wheel" maneuver in P or Av mode when >>you mount up a K/M lens. Firmware could "blink" the aperture (e.g. '1.4') >>to let you know you set it. After the lens is mounted and max dialed in , >>you just have to dial the wheel to match what you've set the lens to. It >>saves having to mentally do the math, allows open-aperture metering all >>the way to the min aperture of the lens, and doesn't require the "GB >>trick" evertime the lighting changes... only that when you move the >>aperture ring on the lens you match it with the dial. >> >> How exactly do you get 6 EV? >> >>-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
