Wiley 978-0-470-45026-0 Datasheet download pdf (Page 8)

■ Gesture, Form, and Proportion 7

The Interactive light button allows you to move the currently selected light with the

mouse. Simply press the button and move the mouse, and the currently selected light will

move around the sculpture. I usually set a hotkey for this tool by holding down the Control

key and clicking the Interactive light button. ZBrush will ask you to assign a hotkey for

the tool.

I use Interactive light often as I work, and I encourage you to do so as well. As you

sculpt take time to move the light and see how different lighting conditions change your

perception of the shapes you are making. By observing the highlights and shadows on the

ﬁgure from different lighting conditions, you can build a more complete picture of the shape

in your mind. This will be invaluable for picking out areas that may need more work, which

may have been missed otherwise.

By doing this you will ensure the sculpture is accurate under all lighting conditions. Be

aware that interactive light only works with the Standard Materials and will not function

when using Matcap Materials.

Proportion

Proportion refers to relative sizes between parts. There are several systems of proportion for

dealing with the human ﬁgure. All of these systems, known as canons, strive to create a gen-

eral set of rules that help create a natural-looking ﬁgure. In reality no canon of proportion is

always correct for all people. The importance of the canon is that it provides the artist with

a standard set of measurements to keep the ﬁgure looking natural.

Figure 1.11 Note

that the shadow

in this image

was darkened by

adding volume

to the adjoining

surfaces.

View Blur

When working on the ﬁgure it can be useful to look at the surface in terms of

shadow shape and value. By value, I mean the relative lightness or darkness

of the shadow. When working with traditional media for centuries, artists

have used the trick of squinting at the model to reduce the amount of visual

information into a fuzzy generalized image. This helps you judge the shadow

shapes and form. ZBrush has a feature built in to help you replicate this

effect. It is called View Blur. View Blur is located under the Preferences

→

Draw menu. Simply set the slider to a value above 0 and press the VBlur but-

ton. This will apply a Gaussian blur to the entire canvas, helping you pick out

the general shape of the forms and the patterns of highlight and shadow on

the surface. With the view blurred, it is often easier to ﬁnd shadows that are

too dark or too hard, or areas where the highlight appears wrong. This is a

telltale sign that something is wrong with the sculpture in this area.

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Wiley 978-0-470-45026-0 Datasheet Page 8

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