During my brief period of ownership of a Pentax K20D there was a feature which I really liked: there's a custom setting to define the function of the two control dials. For example in program mode the front dial does program shift and rear does ISO; front for aperture and rear for ISO in aperture priority, front for shutter and rear for ISO in shutter priority, etc. I like this because it's really easy to adjust the ISO on the fly with your eye up to the finder, no separate ISO button or diving into a menu needed.

I'm trying to figure out what other cameras this can be done on. The same control scheme carries over on the Pentax K-7. It takes having 2 control dials, which eliminates most companies entry- and mid-level cameras. I'm thinking this might be a Pentax-specific feature because from what I can tell all the other brands' cameras with 2 control dials also have a dedicated ISO button. Do any of you guys have one of these cameras and can shed some light on this? Thanks!