Rendering the Enforcer - ZBrush Creature Design: Creating Dynamic Concept Imagery for Film and Games - page 693

BPR Render Filters
The idea behind the BPR render filters is similar to Photoshop filters but with the added advantage that the
filters take into account 3-D depth information, shadow information, ambient occlusion, and other proper-
ties specific to ZBrush renders. This means that you can adjust the image after it has been rendered. As long
as you don't change the view of the image, the filters will alter the render in real time. This is an effective
time saver and the filters do a lot toward making your BPR render really stand out. This exercise introduces
techniques for using the filters on the Enforcer image.
1. Once the BPR render of the Enforcer is complete, place the Render palette in a tray and expand the
BPR Filters subpalette.
2. There are eight slots for the filters labeled F1 through F8. The filters are layered on top of each other
from the lowest to the highest slot number. Each slot button has a dot in the upper right that is a switch.
To turn on a filter, click on the dot so that it turns into a circle. Click on the dot on the F1 button to turn
the filter on.
3. By default, the F1 filter is a noise filter. The render now appears brighter and noisy. The settings in the
lower half of the BPR Filters subpalette control how the filter is applied (see Figure 10-44 ) .
Figure 10-44: Turn on the F1 filter in the Filters subpalette of the Render palette.
It would be nice to separate the Enforcer model from the background image. A good way to do this is to
adjust the intensity so that the background is slightly darker than the Enforcer model.
4. Click on the drop-down menu below the filter buttons and set the Filter to Intensity.
5. The Strength slider controls the magnitude of the effect. Set this slider to -0.25. A negative value for
Intensity causes the image to become darker.