1. Create a new adjustment layer "Hue/Saturation"
2a. Set Hue to -180
2b. Set Saturation to +100
2c. Set Lightness to -100
3. Change Mode to Lab Color, (if asked, yes do discard the layer).
4. In channels delete layer a.
5 Convert to gray scale.
Adjust curves or brightness/contrast for fine adjustments.
I just tested this technique.
I took your Beast.jpg photo and used it as a test. If you do step 3
as stated, you're essentially eliminating what you did in Step
2a,b,c; there's no point to adding the HSV Adjustment Layer. I first
followed exactly what you have listed above and got the exact same
result you did, then I eliminated steps 2abc ... the result was again
bit for bit identical. All this method is doing, as listed, is
throwing away the AB channels and presenting a the Luminosity channel
as B&W.
Then I used the Channel Mixer layered method I normally use and
obtained results which I prefer. The CM layered method allows precise
balancing of the curve that translates RGB into monochrome and can be
used to emulate any B&W film's response curve you want. I modified
the green curve in a layer under the CM layer, which rendered the
foliage with more delicacy.
Godfrey
On Oct 30, 2005, at 8:15 PM, P. J. Alling wrote:
Try it, it doesn't work the way you think it does.
I posted this a while ago:
http://www.mindspring.com/~webster26/PESO_--_beast.html
I just did a conversion using the method I described...
http://www.mindspring.com/~webster26/PESO_--_beastb&w.html
Possibly not the best candidate, but I did no other manipulations
except a straight conversion from the original posted earlier.
Shel Belinkoff wrote:
There seems to be something very wrong with the process as you've
described
it.
Apart from anything else, when setting the lightness to minus 100,
you'll
get a black screen - no info. Care to double check the steps and the
process?
BTW, I agree with everything that Godfrey said ...
Shel "You meet the nicest people with a Pentax"
[Original Message]
From: P. J. Alling
Unless there's something horribly wrong with an image I don't
"use" layers. In photoshop I convert to b&w by first optimizing
the color image as much as I can. Then I use this method.
1. Create a new adjustment layer "Hue/Saturation"
2a. Set Hue to -180
2b. Set Saturation to +100
2c. Set Lightness to -100
3. Change Mode to Lab Color, (if asked, yes do discard the layer).
4. In channels delete layer a.
5 Convert to gray scale.
Adjust curves or brightness/contrast for fine adjustments.
This is the easiest method I've found, (thank Cotty, for posting
it here a while ago). that gives very good results.
--
When you're worried or in doubt, Run in circles, (scream and
shout).
