Thanks, Godfrey. I played a little more with it after reading your message, and I think I understand it pretty well now.
Shel > [Original Message] > From: Godfrey DiGiorgi > The flash exposure compensation (FEC) control adjusts the total > amount of flash exposure in much the same way as the EV compensation > control affects the ambient exposure calibration: it sets the flash > metering circuit to adjust the amount of flash used in the exposure > up or down based upon its setting, in EV. > > On the occasions when I use the built-in flash, I use it primarily as > a way to obtain a little bit of direct, on-camera fill for high- > contrast situations (like a sunlit day at the beach, etc). For that > reason, I normally have the FEC set to either -0.7 or -1.0 EV and use > the camera in Tv mode at 1/125 second. The result is that the ambient > meter sets the aperture based on the ambient light to a reasonable > value, and the flash metering cuts the flash importance to be under > the daylight by that amount. The integrated result with P-TTL is to > reduce the hot-looking glare of on-camera flash and fill in shadows > nicely. > > The FEC control only affects the built-in or dedicated external flash > systems running P-TTL or TTL metering. It has no effect on something > like my non-dedicated Sunpak 383 external flash. > > Godfrey > > On Apr 3, 2006, at 8:51 AM, Shel Belinkoff wrote: > > > Last night, while trying to get some pics of my cat in a very dark > > room, I > > decided to try the pop-up flash on the istDS. A little symbol in the > > viewfinder was blinking, and upon checking into the cause, I found > > that > > flash compensation had been set. So, what is flash compensation > > and when > > would it be used? > > > > > > Shel > > > > > >
