dave_cheney Posted December 6, 2002 Share Posted December 6, 2002 I have a question concerning ways to make exposure compensation on anF3. I would be grateful for advice from the photo.net community. From my explorations through the photo.net archives it seams that someSLR and RF bodies that offer A priority AE also let you do quickexposure compensation by using the bodies AE lock function thenturning the apature ring. I've also read that most new Nikon (and other) bodies check theexposure after the lens has stopped down to confirm the meter setting.This would obviously cause the camera to shift the shutter speed ifthe camera sensed that you have changed the apature since locking the meter reading. How does the F3 work in this reguard, can the apature dial be used inconjunction with the AE lock button to provide easier AE comp than thelocking button around the ISO dial? Cheers Dave Link to comment Share on other sites More sharing options...
fredrik_annell1 Posted December 6, 2002 Share Posted December 6, 2002 The F3 locks the exposure then you press the AE lock button - hence you can use the aperatur ring as manual compensation. I find that hard to do though. I always shot in manual mode. Besides the 80/20 central metering system works best if you shoot manual. /Fredrik Link to comment Share on other sites More sharing options...
mskovacs Posted December 6, 2002 Share Posted December 6, 2002 I did not know this about this "feature". I'll have to give it a try when I get home. Normally I just use AE lock to lock on something neutrally toned (not always possible). I don't generally use the exposure compensation: its too slow in operation and more often than not I forget that its not set to 0. Regarding manual mode, I have to agree. Its just too much of a dance for my hands to hold this button, twist that, fire, ...although admittedly the F3's ergonomics are up to the task, especially with the MD-4. Link to comment Share on other sites More sharing options...
richard_cochran Posted December 6, 2002 Share Posted December 6, 2002 The only Nikons that re-check the metering after stopping the lens down are some of the ones where the body controls the aperture in shutter priority and programmed autoexposure modes. On the F3, the aperture is always set by the aperture lens on the ring, and the F3 only offers aperture priority autoexposure. The F3 doesn't re-check the metering after stopping down, because it has no need to. <p> The reason some cameras do have to re-check the metering after stopping down has to do with the way Nikon added the ability of the body to control the lens aperture via the diaphragm stop-down lever, while maintaining compatibility with the lens mount/diaphragm coupling that wasn't originally designed to support this feature. Some pre-AIS lenses didn't have a standardized proportional movement of the diaphragm for a given movement of the stop-down lever, so a camera couldn't be sure what aperture it would actually get when it tried to set the aperture in P or S mode. Therefore, the camera had to re-check the light passing through the lens after stopping down, and adjust the shutter speed accordingly. In P & S mode with a pre-AIS lens mounted, both the aperture and shutter speeds displayed in the viewfinder are only rough hints at the approximate shutter speed and aperture that will be used. I know the FG and FA can do this; perhaps a few others as well. <p> AIS and later lenses have a well-calibrated diaphragm stop-down mechanism, avoiding the problem. Electronic control of aperture will also avoid the problem. Link to comment Share on other sites More sharing options...
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