Using the Histogram - Luminosity & RGB

I'm continuing my learning process with my GX10 & whilst I've always used the histogram in "standard" view, which I assume is the luminosity channel I've never really used the "RGB" option.

Obviously the RGB provides even more detail of the image - how many users utilise the RGB ?

thanks

Simon

had a situation yesterday. it made me laugh,
I was at a photo store, trying out the 50-135 f2.8.
Gerri fires a shot with the k10 and comes up with this weird screen, with a bunch of little rectangles, on black...
neither she nor the clerk could figure it out...
I get handed this camera and at first I'm stumpped...I don't recallever seeing that....push back a few frames, and there's this antique teacup I'd shot earler, and the rgb histograms for it.
I hadn't used that setting since we got the camera and was testing every feature.
I had also broken one of my own rules and and didn't reset the camera controls before putting it away, and so when Gerri fired a test shot at the store, she was shooting at iso 100 f16 1/180 sec in manual mode.
It was the solid black frame that threw us all off for a minute or three...

so other than to troubleshoot difficult color casts in the feild, I'm not real sure what use the feature serves, (I use grey cards and manual wb, even when shooting raw, so I've not needed it).

I always chimp. Never at the picture (to small anyway), but always at the RGB Histogram.( luminousity histogram, tells me nothing.
But then..,i always try to expose as far as possible to the right so i better check it.
Martin.

You use the RGB mode to check whether you've gone out of gamut
You can easily blow the red off the scale for example.
Matt

I suppose it's all about the interpretation of the histogram reading too - whilst it may show some loss of one of the colour channels this is perhaps preferable sometimes to underexposing the rest of the shot, obviously depends on the "scene" been captured

simon