Re: hold incorrect exposure or correct in middle of shot

Rich,

You keep coming up with good exposure questions!

Obviously at the "start" of each scene/shot you should adjust the exposure to an optimum setting. Sometimes of course as you move around, into and out of the light or from from frontlight to backlight the exposure will change, and you should make smooth adjustments to the iris just as you do to the focus. It helps to anticipate these changes by looking with your other eye as you move about and time the change of the iris to match the change in light. Over time and with practice you might be able to do this so it's not noticable; a good camera operator can certainly do this better than the auto iris! I can tell from your question that you are sensative to the problem of making the adjustment at the wrong time and ruining the shot.

JS