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Photoshop Contest Forum Index - Ask the Experts - Black/white with color - Reply to topic

Post Tue Jan 20, 2009 2:49 pm   Reply with quote         


I want to make an image black and white, except for one specific color, e.g. purple. I know the technique where you use two layers and the history brush tool, but it consumes to much time and the result is not very precise. I've heard about a way where you use two layers and choose the color you want to bring out.

I would be very thankful if anyone could help me with this technique.

Ole-Chr.




splodge

Location: Yorkshire,

Post Tue Jan 20, 2009 2:57 pm   Reply with quote         


try > select > color range > layer via copy, then turn the backgrond to b/w




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Hallcross Toots
Tesore

Location: On the way to Utopia!

Post Tue Jan 20, 2009 3:26 pm   Reply with quote         


Don't think in black and white: think in the colour of your heart...

http://www.youtube.com/watch?v=aS0yRaq8s-c&feature=PlayList&p=B131D120F86A23D4&playnext=1&index=53

Its a famous song in Holland.

^^^What Splodge said. Wink




jerry717

Location: Livonia, Michigan

Post Tue Jan 20, 2009 4:59 pm   Reply with quote         


Well here is one way but it will depend on the colors of the image to start with. I chose a colorful image and chose to keep blues and purples while turning everything else to BW.

Start by converting the image to LAB color.


Set up a hue/Saturation correction layer and turn the saturation to -100.


Bring up the Layer Options palette and and modify the blend if sliders as follows. Select the b channel from the drop down menu. Move the slider as indicated. Use the option/alt key to split the sliders as indicated.


Here is my final result as a before and after gif.


Maybe this will work for you too?? There is no masking required and this took me less then 30 seconds to complete.

Give it a try!




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bigbuck

Location: Australia

Post Tue Jan 20, 2009 7:53 pm   Reply with quote         


You can get some nice effects bringing out the colour on only one object





annajon

Location: DEAD THREAD DUMPINGGROUND NEAR YOU

Post Tue Jan 20, 2009 7:59 pm   Reply with quote         


wow, cool lesson




TofuTheGreat

Location: Back where I belong.

Post Wed Jan 21, 2009 12:27 am   Reply with quote         


I was gonna suggest blend-if but I see the wise Jerry beat me to it.

I did this (quick and dirty) using a desaturated layer above the full color and then masking.

Original





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supak0ma

Location: Photoshop Nation

Post Wed Jan 21, 2009 12:46 pm   Reply with quote         


a tut from the master himself...listen kids! Smile




mellowdesign

Location: Location: Location:

Post Wed Jan 21, 2009 2:30 pm   Reply with quote         


You can always convert to black and white and then back to CMYK/RGB and then...

either...

add a purple as a monotone if you want it all over

or...

add a new layer, fill with purple, change the layer to 'color' and adjust/paint as required...

or...

what the others said!


Very Happy




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Marx-Man

Location: The United Kingdom!

Post Sun Feb 08, 2009 2:20 am   Reply with quote         


nice




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sonic3

Location: Devon, UK

Post Sun Feb 08, 2009 2:43 am   Reply with quote         


I would just make the adjustment by dropping the saturation out of the undesired colours with the 'hue and satuatution' in the colour options, its quick and easy, but does depend on the picture you are changing.
You have 6 colours to adjust Red, Green, Blue, Cyan, Magenta and Yellow.
Purple usually comes under Blue or Magenta.

Play with it and see if it effects the photo in the way you want.



Hope it helps




Photoshop Contest Forum Index - Ask the Experts - Black/white with color - Reply to topic

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