How do I use one of the RGB channels as the data for a black and white photo?

DQ
Posted By
Don Quixote
Nov 10, 2004
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173
Replies
3
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Closed
Usually one of the three channels would be more suitable for black and white, but how do I use it?
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black black and white channel how rgb use white

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M
Marsupilami
Nov 10, 2004
Don Quixote wrote:
Usually one of the three channels would be more suitable for black and white, but how do I use it?

Delete the other channels?

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Marsu.
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R
RSD99
Nov 10, 2004
See Russell Brown’s tutorial "Seeing in Black & White" … http://www.russellbrown.com/tips_tech.html

Another way would be to go to Saturation and turn it down to zero …

Another way would be to change the image’s Mode to Lab … and delete the a and b channels …

So on …. last time I looked there were about 5.297 ways to make an RGB image into B&W.

"Don Quixote" <don quixote @ yahoo.com> wrote in message
Usually one of the three channels would be more suitable for black and white, but how do I use it?

H
Hecate
Nov 11, 2004
On Wed, 10 Nov 2004 21:50:57 GMT, "Don Quixote" <don quixote @ yahoo.com> wrote:

Usually one of the three channels would be more suitable for black and white, but how do I use it?
Blend using the channel mixer.

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