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can anyone explain this to me?

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Old 07-18-2012, 08:17 AM
modelsfret modelsfret is offline
Join Date: Jul 2012
Posts: 43
can anyone explain this to me?

Hi was reading this blog and he said that he

"added a subtle Glow to her skin by manipulating a copy of the Blue Channel to create a selection I could add the Glow through"

new to retouching can anyone explain what he means?

from this blog post with image
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Old 07-18-2012, 09:32 AM
Mike Needham's Avatar
Mike Needham Mike Needham is offline
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Posts: 543
Re: can anyone explain this to me?

I guess he makes a copy of the blue channel, adjusts the levels (perhaps boosting the white) and then uses this channel as a selection with a feather and fills with white and reduces opacity of layer to suit, or perhaps combine it with a blend mode like soft light.

Or perhaps something similar?
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Old 07-18-2012, 07:13 PM
RobertAsh RobertAsh is offline
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Re: can anyone explain this to me?

If that's what the author meant then I imagine he's also copying the blue channel then inverting the copy, as the blue channel is always very dark for human skin, which has little blue in it.....

Inverting the blue channel copy would change the skin area from black to white, then loading that copy as a selection would select the skin. Then just adjust the mask to select only the places you want the glow to appear.

[NOTE: I edited my original short response to add more detail for beginners. Cheers.]

Last edited by RobertAsh; 07-21-2012 at 12:37 PM.
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