Selective Colouring?

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You can possibly with the HSL sliders but I don't think it is that practical in LR - yet!! Easier in PS.
 
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I had a go at something like this using the Adjustment Brush with saturation set to '. In the first case, it took too long and I resorted to Photoshop to finish it off.



In the second case, I found that even with saturation set to ', it didn't completely desaturate - note that the tint doesn't completely hide the red in the man's scarf.

 
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Try Garry's first method in reverse:

Slap on a BIG ''' saturation local brush to take the whole image to no saturation. Create a New adjustment, and selectively paint back in 1''(?) saturation with a finer brush tip, and perhaps automask.

For mathematical reasons I was never able to comprehend fully, you can't take global saturation to ', and then paint it back in locally.

Alternatively, something like blue eyes in a hi-key image can be brought out by Geoff's method of tweaking individual channel HSL.
 
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Here's one done in LR...

112524893.jpg
1'9259143.jpg
 
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Brad Snyder said:
... For mathematical reasons I was never able to comprehend fully, you can't take global saturation to ', and then paint it back in locally.
Click to expand...
Time for a feature request Brad! ;)

What I think it that it have something to do with the order used by Lightroom to apply our settings... :roll:
 
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Denis, I saw a long discussion between Lee Jay F. and Mark Hamburg on another forum, and it had to do with what was basically a divide by zero problem. That is to say, once saturation is reduced to zero, how much is a 1'% increase? I followed all that, but what I didn't understand is why an exception case couldn't be created to define that particular situation. Apparently there was a good reason, that I didn't understand.
 
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I find it fairly easy to set up in LR by doing the following:

-go to HSL mode set all the Saturation sliders to -1''
-open a brush, set the Saturation setting to 1''

paint back in the colour. No Problemo...

I have a preset that I made that is called "B&W_HSL_desaturate". All it does is the first step above. It's an alternate way to convert to B&W. It's advantage is that all the color sliders color temp/tint, vibrance, saturation that disappear when you go "Grayscale" within LR are still available in this B&W mode (not that you NEED them, but I find myself playing with the Temp mostly)
 
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I always do my B&W that way. Not to bring back some color but more to change a specific color's luminosity. The principle is the same...
 
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Brad and neelin: Thanks for making this a lot easier. I had a feeling I was going about it the wrong way.
 
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neelin said:
I find it fairly easy to set up in LR by doing the following:

-go to HSL mode set all the Saturation sliders to -1''
-open a brush, set the Saturation setting to 1''

paint back in the colour. No Problemo...

I have a preset that I made that is called "B&W_HSL_desaturate". All it does is the first step above. It's an alternate way to convert to B&W. It's advantage is that all the color sliders color temp/tint, vibrance, saturation that disappear when you go "Grayscale" within LR are still available in this B&W mode (not that you NEED them, but I find myself playing with the Temp mostly)
Click to expand...

What a top tip, thanks.........
 
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