Hopefully a quick one :)

I've discovered and played with the green channel for retouch and just have a quick question about the results.

Once I go back to viewing as RGB full colour, I get greenish marks (and sometimes other colours). Why?

Is this a simple case of 'overdoing' it? Or is there something else I'm doing wrong? Is it more to do with what specifically, I retouch on that channel?

The green channel in itself is brand new to me.

You would really need to post before and after pictures for anyone to give assistance on this.

Christine

Here is a picture with the effect I'm talking about.

I've used healing brush to retouch some of the face, by using the green channel as a working space. When I go back to colour, this is what I see.

If you look at the forehead and laugh-lines as well as under the eye on our left you can see a green 'glow'.

I've tried this on various quality images - this one is just one of mine that isn't good quality but on professional shots in original size (which I can't put here, sorry, copyright) it has the same effect.

oh - and going over those areas visible in the other channels just means I see red and blue where the green is as well.

If you can post a before picture we may understand exactly what it is you are trying to do. Normally manipulating a single channel is only done to remove a colour cast, not for retouching.

Christine

You can retouch on each channel BUT ensure that all the channels are highlighted when you select the green one.

See sreenshot below.

Aylaah, the color of each pixel in a RGB image is determined by the values in the respective channels. When ever you change any value in a channel you will change the color of the associated pixels. Shelby's advice will allow you to see what effect you are having on the composite image as you are making changes on any of the channels.
Regards, Murray

As per shellby otherwise, unpredictable results will follow