Page 218 - Enhancing CAD Drawings with Photoshop

4386.book Page 202 Monday, November 15, 2004 3:27 PM

202 CHAPTER 6 ELEVATING THE ELEVATION

Figure 6.11
Reveals added and
emphasized

Varying the shading across the stonework will make it look more realistic. You can accomplish
this by adding a Dodge And Burn layer (see Chapter 3, “Digital Darkroom Skills”). In addition
let’s mask everything but the stonework to keep the changes neatly contained.
17. Turn off the Linework layer temporarily. Create a new layer called Dodge And Burn and make
the layer yellow. Make sure the layer is on top of the stone layer in the Layers palette. Change the
blend mode to Hard Light and the opacity to 50%.
18. Press W to select the Magic Wand tool. On the Options bar, set Tolerance to 0, uncheck Anti-
aliased, check Contiguous, and check Use All Layers. Click inside the blue portion of the image.
Press Shift+Ctrl+I to invert the selection; now only the stonework is selected. Click Add A
Layer Mask in the Layers palette. (It’s not strictly necessary to add a mask, but it is good prac-
tice to mask off the area of interest for safety.)

19. Click the Dodge And Burn layer thumbnail to select the layer itself (not the mask). Press B to
select the Brush tool. Select a soft large brush on the Options bar; a 700 pixel soft brush will do
in this case. (You can type a value or use the square bracket keys in conjunction with Shift to
change the size and hardness of the brush.) Paint a few black brushstrokes diagonally across
the base of the elevation; it darkens as it’s burned. Press X to exchange the colors in the toolbox
(so that white is in the foreground). Paint another brushstroke across the upper-right corner of
the facade; it lightens as it’s dodged (see Figure 6.12).
20. Turn down the opacity of the Dodge And Burn layer to 35% to tone down the overall effect. Turn
the Linework layer back on.