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How to use flats when coloring lineart in photoshop
Hey everyone. Someone from the forum at www.penciljack.com asked me what the purpose of "flats" in comic coloring was. I took some screenshots in photoshop and made this tutorial. I'll try to explain the different steps here.

1. This is the channels palette. This is where I put the flats. All the channel "layers" are in greyscale. Select the flats by pressing the flats layer.



2. Notice how the main image changes to the greyscale flats channel.



3. Choose the magic wand tool by pressing the icon on the tools palette or by pressing the hotkey "ctrl-w". Copy the settings from the ones on the image bellow. Turn of antialiasing and set the tolerance to 0.



4. Here we are ready to select the skin with the magic wand.



5
. After a single click with the magic wand, all her skin is selected Easy. Now You don't need to reselect everything with the lasso tool each time You want to make a correction. This will speed up the coloring process enormously.



6. Change back to the main image by pressing the rgb channel in the channels palette. Notice how the selection from step 5 still remains. Now You can color without running over anything else than the skin. If you don't want to look at the "marching ants" or selection outlines, press "ctrl-h" to hide them. "ctrl-h" unhides them again and "ctrl-d" deselects them.




Flats are used by all the professionals in the industry (or most of them anyways) and some of them even have flatters who lay down the flats for them. The flats themselves are a little boring to make. You start out with the lineart. Make a new layer in the layers palette and set the mode to multiply (make the lineart "shine" through whatever colors you make on the new layer).

Select the polygonal lasso tool (the one that makes straight lines), shortcut "L". The normal "freehand lasso tool is on by default, so you have to browse through the lasso tools until you get the polygonal tool. You can browse through the different lassotools by pressing "shift-L" (same with all the other tools). Turn of antialiasing (very important). Now start selecting the different areas of the lineart. Select all the skin for example.. or the jacket. Anything which you will need to color without affecting anything else later on.



Only make flats.. highlights and shadows will come later. When you have flatted the whole image, press "ctrl-a" to select everything. Press "ctrl-c" to copy. Go to the channels palette (next to the layers palette". Make a new channel (same way as when you make a new layer). Paste the flats onto this channel by pressing "ctrl-v" (paste).

You now have a flats channel, and you can now start adding shadows and highlights to the main image (rgb channel). The smart thing about the flats are that they stay the same no matter how much you paint shadows and highlights and fancy effects on the main image. Imagine that You didn't have flats and you were to paint the skin. You would paint it with a brush, being very careful not to go over the lines and into the skirt or the background. Then you would paint the shadows.. still having to be very careful not to go over anything else than the skin. With flats you just select the skin with the magic wand from the flats channel. And now you don't have to be careful anymore.

I hope this will be helpful to some of you! I don't know where I would have been without my flats.
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