Making Your Silkscreen






Making Your Silkscreen

The steps here are pretty straightforward, but they do take some knowledge of the Channels palette. For instance, you need to know how to select multiple channels. If you need a refresher on channels, turn to Technique 52.

TipĀ 

Several of the steps involve selecting a specific channel, but you may want to experiment with a different channel depending on the colors in your image. Run through the steps a few times, selecting a different series of channels each time.

Here’s how to turn your image into a photo silkscreen:

  1. Open the image that you want to use.

    For this example, I’m using the four lizards shown in Figure.

    Click To expand
    Figure: These lizards are going to be silkscreened.

  2. In the Channels palette, choose the Green and Blue channels.

  3. Choose Image>Adjustments>Equalize.

  4. In the Channels palette, choose the Red channel.

  5. Choose Filter>Other>High Pass.

  6. In the High Pass dialog box, set the Radius to 3, as shown in Figure.


    Figure: Set the Radius to 3 in the High Pass dialog box.

  7. Click OK to close the High Pass dialog box and apply the High Pass filter to the Red channel.

  8. With the Red channel still selected, choose Image>Adjustments>Threshold.

  9. In the Threshold dialog box, set the Threshold Level to 125, as shown in Figure.

    You may need to fiddle a little with this setting to get the best balance between black and white.

    Click To expand
    Figure: In the Threshold dialog box, set the Threshold Level to 125.

  10. Click OK to close the Threshold dialog box and apply the command to the Red channel.

    The four lizards now look like those shown in Figure.

    Click To expand
    Figure: After applying the Threshold command to the Red channel, the lizards are starting to look like a silkscreen.

  11. In the Channels palette, select the Blue channel.

  12. Choose Filter>Noise>Median.

  13. In the Median dialog box, set the Radius to 5, as shown in Figure.


    Figure: Set the Radius to 5.

    Setting the radius to 4 makes the Blue channel very smooth looking.

  14. With the Blue channel still selected, choose Image>Adjustments>Threshold.

  15. In the Threshold dialog box, set the Threshold Level to 40.

    You may need to play with this setting to get a good balance between black and white.

    After adding a black background, the four lizards look just like a Warhol silkscreen, as shown in Figure and Color Plate 40-1.

    Click To expand
    Figure: The lizards definitely look reminiscent of a Warhol silkscreen.

    TipĀ 

    Another way to create a photo silkscreen effect is to apply the Stamp filter to one of the channels. If you want to experiment, open an image and apply the Stamp filter to the Red channel first and see what kind of results you get.



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