Creating a CMYK Halftone Image



  • I thought I would share a tutorial on creating a CYMK halftone image from a color image.

    alt text

    This is a little complicated but there's a reason RIP programs are expensive. It's easy to make this an action so I'll give instructions in steps that you can follow along and record as you go.

    First, you need an image that is flattened and rasterized. I've used a photo of the Dark Knight vs. Superman statue from DC. Start your action recording on this image layer.

    Go to Edit>Copy and then hide the image layer. Go to Layer>New Layer Folder and rename the layer Black. Go to the Layer Property Palette and click the Tone Effect button. Switch Density to Use Brightness of Image.
    Go to Edit>Paste and name the layer K Tone. Change the Color Expression to Gray and go to Layer>New Correction Layer>Level Correction and click OK. To change layers click ALT+[ twice.

    Go to Layer>New Layer Folder and rename the layer Cyan. Switch the Layer Mode from Normal to Darken. Click the Tone Effect button and switch the Density to Use Brightness of Image. Change the Angle of the tone to 15. Click the Layer Color Effect button and change the main drawing color to cyan using the CMYK color sliders (C100 M0 Y0 K0) and then click in the layer color box to change the color. Go to Edit>Paste and name this layer C Tone. Go to Edit>Tonal Correction>Tone Curves. Use the RGB drop down menu to select Green and drag the right side handle down to 0 to remove green. Do the same thing to the Blue. Click OK.

    alt text

    Change the Color Expression of the layer to Gray. Go to Layer>New Correction Layer>Level Corrections and move the arrow on the right to the edge of black 'mountains'.

    alt text

    Click OK. Click ALT+[, ALT+[ to move down two layers.

    Go to Layer>New Layer Folder and rename the layer Magenta. Switch the Layer Mode from Normal to Darken. Click the Tone Effect button and switch the Density to Use Brightness of Image. Change the Angle of the tone to 75. Click the Layer Color Effect button and change the main drawing color to magenta using the CMYK color sliders (C0 M100 Y0 K0) and then click in the layer color box to change the color. Go to Edit>Paste and name this layer M Tone. Go to Edit>Tonal Correction>Tone Curves. Use the RGB drop down menu to select Red and drag the right side handle down to 0 to remove red. Do the same thing to the Blue. Click OK. Change the Color Expression of the layer to Gray. Go to Layer>New Correction Layer>Level Corrections and move the arrow on the right to the edge of the black 'mountains'. Click OK. Click ALT+[, ALT+[ to move down two layers.

    Go to Layer>New Layer Folder and rename the layer Yellow. Click the Tone Effect button. Change the Angle of the tone to 0. Click the Layer Color Effect button and change the main drawing color to yellow using the CMYK color sliders (C0 M0 Y0 K100) and then click in the layer color box to change the color. Go to Edit>Paste and name this layer Y Tone. Go to Edit>Tonal Correction>Tone Curves. Use the RGB drop down menu to select Green and drag the right side handle down to 0 to remove green. Do the same thing to the Red. Click OK. Change the Color Expression of the layer to Gray. Go to Layer>New Correction Layer>Level Corrections and move the arrow on the right to edge of the black mountains. Click OK.

    You can end the recording here. You'll now have all the folders set up to create the half tone image but first we need to fix the tone levels on the Black tone. Just double click on the Tone Correction layer in the layer palette and the level correction window will appear again. Adjust as needed. All of the tone layers are adjustable (Number of Tone Lines, Dot Settings) and all of the color levels are adjustable (by double clicking the level correction layer in the layer palette). The action will record the level correction when you placed the brightest levels to the edge of the graph and it will repeat that action with any image.



  • When everything is done, your layers should look like this. I've highlighted the areas in the Layer Property palette you'll need to use as well as a shot from the Auto Action palette and the layer mode (for newbies who might not know where these things are).

    0_1466663612172_setup.jpg


Log in to reply
 

Looks like your connection to Graphics Forum was lost, please wait while we try to reconnect.