Digital BW, The Print

To get a more dramatic red filter effect, try this:

In RGB mode, open the channels window and discard the blue channel.  
Then convert to greyscale mode.  Also try going back to the full 
color image, in RGB mode, throw away the red channel.  This has the 
effect of adding the opposite color filter.  If you throw away the 
red channel, if I remember correctly, it is the same as adding a 
blue filter.  If you throw away the blue channel, it should be the 
same as adding a red filter (or thereabouts, I know on the color 
wheel red and blue are not opposites, yellow and blue are, but these 
are the channels available).  Or you can just reduce the saturation 
or opacity of that channel.  If you think about it, a filter reduces 
the opposite colors, so if you take out the opposite color channel 
or reduce it, then you are simulating the effect of that filtration.

It's a reduction of the representation of existing information in 
the image, not an overlay or adding more information.  I'm not sure 
I fully understand what degrades an image or the level of it, but i 
know from a visual and detail retention perspective, the channel 
method of converting to greyscale is the most recommended method by 
people from NAPP.  I've tried multiple methods of this, and these 
simple channel methods have always been more suitable to me and 
those I have worked with in classes, etc.

Once you have gotten closer to your desired filter effect by 
removing or reducing color channels, then you can convert to 
greyscale by going to lab color and saving only the lightness 
channel, then finally converting to greyscale mode.  



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Douglas 
Meeuwsen <lipshurt@m...> wrote:
> well, my first try seems to look like the channel mixer is still 
better 
> in the shadow areas, although the reds look good. The filter 
effects 
> were very subtle. I could not seem to get a drastic red-filter-
like 
> effect. The miranda effects are very exaggerated. Is that why the 
> blocking occurs? I wish I new what was going on with that 
conversion.
> On Sep 2, 2004, at 5:31 PM, Michael B. Askew wrote:
> 
> > The best way to convert to B/W is to change the image mode to Lab
> >  Color, then open the channels window, and throw away all but the
> >  lightness channel.  Then convert image mode to grey scale and 
edit
> >  from there.
> >
> 
> 
> [Non-text portions of this message have been removed]