DTP


 
Lively discussions on the graphic arts and publishing — in print or on the web


Go Back   Desktop Publishing Forum > General Discussions > Print Design

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 05-30-2011, 02:03 PM   #5
terrie
Staff
 
Join Date: Oct 2004
Posts: 8,946
Default

Quote:
ronald: maybe the color layers are converted to greyscale and given a halftone effect?
You can experiment with this yourself but use a Channel Mixer adjustment layer--click on the "Monochrome" option--rather than using Image > Mode > Greyscale...

What you want to do first is to take a look at the individual channels in the Channels palette to see which one gives you the "best" result and start with that channel in Channel Mixer and then subtract from your base channel (reduce the percentage from 100%) and add to your other channels. The rule of thumb with Channel Mixer is that the sum of all the channels should add up to 100% but I sometimes find that using a higher total percentage can give you a better coverted image--just depends on the image itself so experiment a bit with the percentages.

In general, I find that using Channel Mixer gives me better greyscale results than using Image > Mode > Greyscale.

You may also find that after adding the Channel Mixer adjustment layer, doing either a Levels and/or Curves adjustment layer gives the greyscale that last little tweak...

Using Channel Mixer is one reason why you want to scan your drawing in RGB--of course you will be adding color later but, scanning the original in RGB, gives you greater flexibilty later (as does scanning at 600ppi/dpi)...

Hope that helps...

Terrie
terrie is offline   Reply With Quote
 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Screen resolution? Bo Aakerstrom Hardware & Gadgets 7 08-30-2007 09:51 PM
Screen colour V's Print Colour FlipSide Print Design 2 10-12-2006 01:42 PM
Need help using color photo as a screen StarStuff Images 6 08-21-2006 03:02 PM
Indesign printing colour separations MicR Print Design 3 03-28-2006 07:08 AM
Separations: The Hard[ware] Way Howard White The Corner Pub 14 08-29-2005 06:29 PM


All times are GMT -8. The time now is 09:31 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Contents copyright 2004–2014 Desktop Publishing Forum and its members.