I'm interested in this approach, so I gave it a try.
without much success.
Couple of quick questions...
when I combine all the individual channels as separate layers back into
a single document, what layer goes on top? what layer goes on bottom?
Should there be a fourth layer? (the background, essentially).. If so,
what color should it be? assuming either black or white..
Thanks,
Mike
Glenn Mitchell wrote:
> I have not seen any messages that discuss my favorite technique for
> conversion to B&W. It uses a little-known PS feature called Split
> channels.
>
> Split Channels is a menu option on the flyout menu for the Channels
> Palette. It takes your RGB image and creates a separate grayscale
> image for each channel.
>
> Almost everyone here will be familiar with using Mode | Grayscale or
> Channel Mixer with the Monochrome box selected to create a B&W image.
>
> This is even better than using Channel Mixer with Monochrome. Much
> better, IMHO! After you create files for the separate channels, you
> copy them all to the same document as separate layers. That way, you
> get immediate feedback as you experiment with various layers options,
> like opacity.
>
> I worked on an image last night I brought the blue channel in at 5
> percent opacity in Normal blend. The red channel was 80% opacity in
> Normal blend. The green channel was 95% opacity, but I used Soft
> Light blend for added contrast.
>
> You can turn the visibility on and off for various layers as you try
> to decided how much of each to incorporate. You can change the layer
> opacity and blend mode. You can even control the set points for what
> gets blended from each channel -- perhaps the shadows from one, the
> midtones and highlights from another.
>
> I'm working on a PDF tutorial right now.
>
> It's now the only way I convert from color to B&W. Give it a try!
> Pretty neat stuff!
>
> Perhaps the Split Channel technique will come in handy for you in
> the future.
>
> Cheers,
>
> Mitch
>
>
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