I just got my GH2 yesterday and I've applied the 44 Vanilla hack, enabled High ISO, set camera to recommended settings on the GH2 Hack Vault page, purchased and read Andrew's EOSHD Shooter's Guide.
I've setup my Creative Movie Mode settings as per recommended in the Shooter's guide. In the guide, in the beginner's boot camp section, he details that Exposure should be set to Manual which leaves 3 ways to control Exposure; Shutter Speed (which should usually be at 1/50 or 1/60 anyway), Aperture, and ISO.
First of all, from a _complete_ beginner's standpoint, I have to say the guide (though GH2 specific), never mentions HOW to change any of these. I learned by basically pushing everything (I know, RTFM), the Shutter Speed and the Aperture are both set by the "Thumb Wheel" (which, to be explicit, is the wheel most available to your thumb) and you toggle between the two by depressing the Thumb Wheel. The ISO is o/c accessible via the ISO button (the UP button on the D-Pad).
I think it's weird that the recommendation in the book and repeated almost everywhere is to set the Shutter Speed according to the 180 rule but then in the guide Andrew says that "for beginners the shutter speed is the main way to control the exposure".
I would think the main way to control the exposure would be the Aperture and the ISO because when it comes to Shutter Speed, "ideally it should be kept at 1/50 or 1/60".
I understand that both Aperture and ISO have other ways they impact the video other than exposure and, according to the guide, "1st priority of the aperture setting is to control [b]depth of field[/b]". So, that leaves us with ISO which can also impact noise.
However, it would seem to me that [b]the main way to control exposure would be ISO[/b]. Playing around with ISO, I'm starting to think that ISO 160 is only going to work well outdoors and I seem to consistently have to set ISO up to 640 minimum for indoor shooting.
Now, granted that's with my 14-42 which has a minimum aperture of 3.5 so with a "faster"? lens, ISO 160 might be fine for most indoors.
I started out with a particular question in mind but I think now I'm just down to, am I right about all this???