- Add a Threshold Adjustment layer. You could stop now and
leave the cross-hatching set against a lightened version of the
color photograph. But presumably, you want to convert the
entire graphic to black and white. It might seem like you could
just set the Background layer to white and be done with it. But
thanks to the Underlying Layer settings, the behavior of the
cross-hatching depends on the colors in the photograph. How-
ever, there is a way to keep the effect without keeping the colors:.- Click the top layer in the Layers panel to make it active.
- Then click the icon at the bottom of the panel and choose
Threshold. The Threshold controls will appear in the Ad-
justments panel (which will automatically open if you don’t
already have it visible), as shown in Figure 4-53. - Set the Threshold Level value to 120 to create the ideal bal-
ance of blacks and whites. Then click press Enter (Return)
or Tab to accept the adjustments.
- Adjust the layer styles for the two pattern layers. After seeing
the results of the Threshold command, I decided I wanted to
adjust the amount of patterning across her face. This is fairly
easy to do, since the layer styles we applied earlier are adjustable:
- Double-click to the right of the Thin Lines layer name to
reopen the Layer Styles dialog box, and return to the Un-
derlying Layer slider.
Figure 4-52.Figure 4-53.Turning a Photograph into a Line Drawing 125