Steve, If the Green layer (or any topmost layer for that matter) mode
is set to normal it will be completly opaque when set to 100%, thereby
obscuring any and all layers beneath. As you decrease the opacity of
the top layer more of what lies beneath is allowed to show through.
Jeff
--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Steve Kale
<stevekale@b...> wrote:
> Perhaps it would help if I am more explicit about what I am
seeing/doing. I
> copy the red and then green layers to the blue doc, duplicate the
blue
> background layer and rename it blue, and then delete the background
layer so
> that I end up with a doc with 3 layers only (no background): blue,
red,
> green from bottom to top. When I view the layers one by one I note
that
> they are very different. I can see the impact to the doc if I
select just
> the blue to be visible and then click to add the visibility of the
red and
> green. I see no change to the doc if I subtract the visibility of
layers
> under the green (ie turning off first red then blue) unless green
(the top
> layer) is less than 100%. So really the red and blue channels are
being
> allowed to only play a very small part and then only if green
is
less than
> 100%. Am I just doing something wrong here?
>
>
> From: stevekale@b...
> Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Date: Wed, 17 Dec 2003 16:25:43 -0000
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Split channels B&W conversion
>
> I would like to thank Mitch for his tutorial on using Split
Channels to
> convert to B&W.
> This certainly seems to be a very powerful method and one that I
intend to
> use from
> now on. As I explore this method I would very much appreciate a
number of
> very
> basic pointers. Mitch has mentioned in a posting here that 5-10%
for Blue,
> 65-80%
> for Red and 90-100% for Green provides him with good initial
results. In
> his tutorial
> he mentions using Pin light on the Blue channel to provide greater
contrast.
> I know
> this is a massively broad question but could someone help me along
my way by
> telling me what to expect from increasing/decreasing the % of a
particular
> colour
> channel and changing the type of blend mode for a layer. I know
this delves
> into the
> heart of using PS but I am torn between having to methodically study
how to
> use PS
> better and getting good use out of it now.
>
> Thanks in advance
>
> Steve
>
> PS: Alan also mentioned copying the Luminosity channel after a
conversion
> to LAB
> colour and using this also. I assume he meant the Lightness
channel. Any
> suggestions for weighting/inclusion of this also?
>
>
>
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