Using Photoshop’s “Black & White” adjustment vs. rough blue line art.

When I draw a thing, I often first draw it rough using Col-Erase™ blue pencil. Then I go over top and make it look NICER using a dark pencil.

I used to remove the blue pencil from the image in Photoshop by selecting the “blue” channel of the RGB scan and turning that into the line art. That was the old way! This is the new way, and it is better!

Look at this drawing. This is what a raw scan usually looks like. See the faint blue lines in there? Ick.

image

This is what it looks like when I select the blue RGB channel:

image

PROBLEM:

It’s pretty effective, but not a critical hit. I can still see faint traces of the blue lines:

image

image

Normally I wouldn’t worry about it. I’d just blow ‘em out by increasing the contrast (through the Curves or Levels adjustment). BUT WHY SETTLE FOR THAT?

SOLUTION:

I don’t know when Photoshop introduced the Black & White adjustment tool, but it’s my new best friend. Let’s make a Black & White adjustment layer above our raw scan.

image

You’ll get this fun palette popping up:

image

… but you’ll still see the faint blue lines. They’ll be in black & white, but they’re still very visible. HOLD ON, that’s because we haven’t DONE ANYTHING yet.

CLICK! I select the “Blue Filter" preset:

image

Now look where those blue lines used to be:

image

You can even jack the sliders up to make your old blue lines look BRIGHTER, which is no big deal because our goal in the end will be to make that light-grey that used to be my white paper actually look white.

image

I’ma add a Curves adjustment layer.

image

Fiddle with the curves til your paper surface is white and your lines look about as good as they can look:

image

YOU CAN STOP NOW IF THAT’S ALL YOU WANT. Here’s some bonus shizz. I’m going to show you how to make the most useful line art you can have. Go to the Channels palette and command-click (or CTRL-click if you need your instructions to be that specific to your own personal life experience) the RGB channel’s thumbnail:

image

You’ll get a selection in the shape of your lines. Important : INVERT SELECTION. Don’t “invert” the contents of the selection, use the INVERT SELECTION menu thing or just press command-shift-I. Then make a new layer to accommodate your line art:

image

Fill the selection with your colour of choice:

image

Ta-da! You have useful line art. Why is this more useful than simply setting your line art layer to “Multiply?” Well, give it a try and see if you can’t come up with your own reason. Or just trust me. It’s MORE FLEXIBLE.

Enjoy!

  1. imperiousheiress reblogged this from short-and-artsy
  2. glubbaghost reblogged this from spacejailer
  3. perplexed-geneticist reblogged this from jess-curious
  4. irisorchad reblogged this from captainbun
  5. karakurip reblogged this from splitsoulsister
  6. dustytophat reblogged this from rawrrawrraygor
  7. alterhaaart reblogged this from rawrrawrraygor
  8. narghargs reblogged this from spacejailer
  9. saintbwalker reblogged this from spacejailer
  10. ratkingjr reblogged this from spacejailer
  11. lightning-thrush reblogged this from rawrrawrraygor
  12. thefaeriecourt reblogged this from rawrrawrraygor
  13. catiekay reblogged this from captainbun
  14. ethyrnality reblogged this from rawrrawrraygor
  15. lesbianvampyrefromouterspace reblogged this from short-and-artsy
  16. kallielefave reblogged this from rawrrawrraygor
  17. rikori reblogged this from short-and-artsy
  18. rawrrawrraygor reblogged this from splitsoulsister
  19. kitsuneyokai13 reblogged this from captainbun