High-Contrast Sketch

Combining the Find Edges filter and the Overlay blending mode can produce a high-contrast sketch effect that works with many types of images. This recipe includes multiple Overlay layers, which boost contrast, so the recipe works particularly well with low-contrast images. In the recipe, I use three Overlay layers—you can use more or fewer, though more than three can produce excessive contrast. Another variation, if the result is too harsh, is to add some Gaussian Blur.

1 In the Layers palette, duplicate the original image layer by dragging the background layer onto the "Create a new layer" icon, or use Ctrl/Cmd-J

2 Using the pull-down blending mode menu in the Layers palette, change the duplicate layer's blending mode to Overlay (or alternatively use the shortcut Alt/Opt-Shift-O) and rename it "Overlay 1."

3 Reduce the Overlay l layer's opacity to 6o%.

4 Apply Filter > Stylize > Find Edges to the

Overlay l layer.

5 Use Ctrl/Cmd-J to duplicate the Overlay l layer Name the new layer "Overlay 2."

6 Use Ctrl/Cmd-F to apply Filter > Stylize > Find Edges to the

Overlay 2 layer.

7 Repeat steps 5 and 6. An easy way to do this is to use Ctrl/Cmd-J followed by Ctrl/Cmd-F.

Direct contrast

This recipe always adds contrast to the image, which this early morning shot needed

Original image.

Overlay

Lock:

Overlay

Lock:

a

.'Overlay .3

9

•i

■ilverlay;^.

Overlay 1

»

3

Background

Pictures with plenty of detail are naturally suited to the Find Edges filter

O Overlay

B 60

C 100

O Overlay

B 60

C 100

Q A Overlay

B 60

C 100

Q A Overlay

B 60

C 100

@ Overlay

B 60

C 100

@ Overlay

B 60

Stark contrast

Brassed off

Original image.

Original image.

. Original image.

As an alternative, I applied the Emboss filter on the top laye This produced a more textured finish

Original image.

Some subjects deserve a gentler treatment, so here I applied Gaussian Blur to the middle Overlay layer

Original image.

. Original image.

This shot, taken in crisp, winter light, was already high-contrast, so I applied Gaussian Blur to the middle Overlay layer

Layers Channels I'athv (J Overlay v Opacity 60%J ■ Q

Overlay S

Overlay 2 + blur 60

Overlay 1

J Background

Q Overlay 0 A Overlay @ Overlay

C 100 C 100 C 100

PH.Overlaps

Overlay 2 + blur 60

^ Overlay 1

Q Overlay 0 A Overlay 0 Overlay

C 100 C 100 C 100

Layers ' Channels 1 Paths -Q Overlay

Overlay 3 + Emboss 135/20/125

Overlay- %

U Overlay 1

Background

Q Overlay 0 A Overlay 0 Overlay

C 100 C 100 C 100

Hot spot

Color matching

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