And it's quite possible that each exposure will be different even though the light has not changed.
Here's a little example I used with some of my students. Turn on a light in a dimly it room. Turn on your camera meter. Place the brightest part of the light dead center in the frame. Now, move the camera around a bit keeping the light source in the frame. In many instances (and I say that only because I'm not familiar with every multi-segment or matrix metering system out there), certainly in EVERY center weighted system and earlier averaging system I've done this with, the recommended exposure will change with a change in the position of the light source. However, the light in the room has not changed one bit, and whatever the photog chooses as the ideal exposure should be the same, whether the light is in the center of the frame or in the upper right corner. But if one relies on the camera to set the exposure, each frame will be exposed differently. Shel > [Original Message] > From: William Robb > People no longer use light meters. For the most part, they trust their > camera to make the right judgement call, with little or no input. They walk > around an inanimate object taking a dozen or more exposures in the hope that > one may be the right one, and then when they get lucky, they put up a PESO > and say look how wonderful am I? And it only took 16 tries to get it.
