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Color to B/W conversion help...
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Fresh-Faced Recruit
Join Date: Apr 2002
Location: Houston, TX
Status:
Offline
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Hey all,
Was wondering what things can I do in Photoshop to a color image to prepare it for conversion to B/W? Most of the stuff I do is this and I know that I should be doing more than just IMAGE-->Mode-->greyscale. I remember a Macworld article about this from several years ago, but don't remember when or where.
Finally, many of these images are then sent to NEWSPAPERS so they generally end up having anywhere from 15% to 30% spread.
Thanks for the tips and help.
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Eric Henao - Graphic Designer
Dual 2.5 GHz G5 - 2.5 GB RAM - OS 10.3.7
and TECHNO music!!!
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Forum Regular
Join Date: Aug 2000
Location: Cali
Status:
Offline
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Not much to say here, but sometimes you might get a better b&w image by converting it to a Lab Color image and turn the Lightness channel into the greyscale image. Then just use curves to make minor adjustments for contrast and such.
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Mac Enthusiast
Join Date: Mar 2000
Location: Los Angeles
Status:
Offline
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Depending on what version of Photoshop you have, you'll want to use something called the Channel Mixer. This is a filter in 5.5 and an Adjustment Layer in 6 & 7. In any case, apply it, set it to Monochrome and adjust the RGB input levels in the resulting B&W image. You end up with a much better image with the greys fully realized from the appropriate channels. Experiment. You'll see...
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 "Pfft. I know a genuine Panaphonics when I see it. And look, there's Magnetbox and Sorny." -HJS
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Fresh-Faced Recruit
Join Date: Apr 2002
Location: Houston, TX
Status:
Offline
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These tips are really great. In an effort to improve them anymore, is there anything i can do to the COLOR image BEFORE i start working on it to convert it to b/w?
Thanks again...
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Eric Henao - Graphic Designer
Dual 2.5 GHz G5 - 2.5 GB RAM - OS 10.3.7
and TECHNO music!!!
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Fresh-Faced Recruit
Join Date: Feb 2002
Location: Reston,VA
Status:
Offline
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when the image is ready, try using apple + M..this is for curves(using the auto in this window usaully works well)..this allows for good contrast. you can also use.. image> adjustments> brightness and contrast.. both these offer good options for adujusting your picture..good luck
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Mac Enthusiast
Join Date: Apr 2001
Location: Adelaide, Australia
Status:
Offline
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Use the channel mixer as an adjustment layer, then apply any changes such as curves or levels as adjustment layers only. This way you are not losing image data until you flatten/merge the layers.
Adjustment layers are available from the Layers Menu or at the bottom of the layers palette in Version 5 (I think) or later.
You can also adjust the opacity, group to a layer (so that they only affect that layer) or turn them on and off.
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