Adusting the exposure when video recording on the Panasonic G7 camera

alcelc wrote:

However auto ISO is limited to still shooting, not allowed on video yet...

I think we're confusing the guy. If you set the camera to M mode on the mode dial, (not Creative Video mode on the mode dial) auto ISO is available. I just tried it on my G7 -  Rolled some video and panned between a dark corner and a bright light. It took the camera a couple of seconds to readjust so the bright light wasn't activating the zebras.

OP - the 180 degree shutter rule is the same as shooting 1/60th for 30p video, or 1/50 for 24p video. I'm really not familiar with shooting in any of the auto modes, but I would choose M on the mode dial so you can set your shutter to 1/60th and your F stop to where you want it. If you want less depth of field, you'd go to your lowest F stop. if you want more depth of field, you'd go higher, but try not to go past F/8 or F/11 so you can avoid diffraction. I would do these setting with a manual ISO setting so you know how much leeway you have with the ISO, keeping in mind, the higher your ISO goes, the more grain you'll get.

Once you have all your settings the way you want them, push the ISO button and select Auto ISO.

The problem with auto settings is that you can't control the camera, the camera controls you. White balance especially can look horrible when it changes during a shot. The colors change hues. It's not pretty.