Registered: 01-2011 Location: Doncaster South Yorkshire Posts: 728
Separating Colour Tones Before The Black and White Conversion Sometimes we are faced with tones in the colour image which have a similar value. It is the similarity of these tones which could lead to issues after the black and white conversion has taken place.
We run the risk of these tones blending into one another and becoming the same shade of grey.
Registered: 08-2014 Location: Leicestershire, UK Posts: 1244
Re: Separating Colour Tones Before The Black and White Conversion Thanks for this Ian.
Although my software - PSE 11 - doesn't come with a B&W adjustment layer I was able to find an action that provides it (along with others).
I've had a go at this method and was wondering...Is it as simple as pushing the sliders to extremes (as a starting point at least) to get maximum separation or is that too simplistic an approach and you need to rely totally on judgement.
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Registered: 08-2014 Location: Up Naarfolk Posts: 1817
Re: Separating Colour Tones Before The Black and White Conversion thanks In , this is similar to what I tend to use in LR with the B+W sliders , when I see I dont get teh tonal separation from desaturating
Why do we set the blending mode to Luminosity rather tha normal?
I mean I see what it does but how does it do it's magic...?
thanks
Last edited by Digital Finger, 4/Aug/15, 9:20 pm
--- I am a part of what I am, not apart from what I dream,
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Registered: 08-2014 Location: Up Naarfolk Posts: 1817
Re: Separating Colour Tones Before The Black and White Conversion what difference is there ( if any) between doing this and simply moving the sliders with blending mode set to normal?
I can't work it out
--- I am a part of what I am, not apart from what I dream,
That's a part of what I seem, but not apart from what I am
Registered: 08-2014 Location: Up Naarfolk Posts: 1817
Re: Separating Colour Tones Before The Black and White Conversion
quote:
IanBarber wrote:
By setting the blending mode to Normal, you are changing Luminosity and not saturation or Hue. We only want to change brightness
sorry still don't get it (no surprise there really)
"by setting blend mode to normal you are changing luminosity"...er OK ...why is it called luminosity blend mode if thats not also what it does (really don't know)
are you saying that the luminosity blend mode changes only brightness, and normal mode changes luminosity?
absolutely baffled here
i.e. does not it do the same thing just adjusting the sliders in normal mode? I can't see any difference between doing that and doing it first with blending mode set to luminosity and adding a mono adjustment layer on that-it still need the sliders adjusting?
Im even more baffled because I thought you said you were colour blind so how can you see the luminosity blendd adjustments of the mono adjustment layer if they're in colour?
I suspect I have got something majorly arse about face here!
Last edited by Digital Finger, 8/Aug/15, 10:52 pm
--- I am a part of what I am, not apart from what I dream,
That's a part of what I seem, but not apart from what I am
Registered: 01-2011 Location: Doncaster South Yorkshire Posts: 728
Re: Separating Colour Tones Before The Black and White Conversion When I refer to changing the blending mode to Luminosity to separate tonal values, I am working on the colour image prior to black and white conversion.
I assume you are doing this ?
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