Digital BW, The Print

In the pre-digital era, photographers would shoot b&w film through filters
to achieve certain effects. They might use a red, green, or blue filter. Now
look at a color image in Photoshop using the Channels pallet to select the
Red, Green, or Blue channel (make sure "Color Channels in Color" is
unchecked in "Display & Cursors" Preferences). We can shoot in color and use
the channel mixer to achieve those filter effects.

Suppose you like the red channel's effect on the sky & the green channel's
effect on the trees - by using Photoshop's selection tools you can apply one
channel mix to the selection & another channel mix to the inverse of that
selection. Say you have a green & red shirt that when desaturated looks like
a gray shirt - use the channel mixer to increase the contrast between the
colors.

The Channel Mixer gives you control.  -BK

> -----Original Message-----
> From: Cleavis [mailto:lyonscox@...]
> Sent: Sunday, December 02, 2001 11:15 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] methods of conversion to B/W
>
>
> Going through the last print exchange (I'm not rubbing this in but am
> studying it) - I noticed that several used the channel mixer to
> convert to greyscale.
>
> Could a few people comment on why they might use the channel mixer
> vs. Image/Greyscale (dump color info) &/or simply desaturate?
>
> Thanks,
>
> Cleavis in AZ
>
>
>
>
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