1. Chapter 3 Value and Spherical Shapes

2. Objectives Understand value and express a range of values as a value scale of grays. Determine the value of the local colors of the objects in a still life on a value scale. See the spherical shapes, including partial or modified spheres, in everyday objects. Draw a reasonably accurate circle freehand. Draw a spherical shape with the illusion of three-dimensional volume by accurately depicting light and dark areas.

3. Value –An index of light Value scale –A range of grays from white to black, usually expressed as 1-10 Tone –An individual gray in the scale

4. Seeing Values Squint to see values accurately. Establish a value scale by noting the lightest area and darkest area; then establish the midpoint.

5. Rendering Local Color Block in tones for the local color of objects with a darker value, leaving the highlight white. Leave lighter objects the white of the paper; block in only the shadows.

6. Spherical Shapes Many objects have a sphere as their underlying shape. Begin by drawing a circle.

7. Volume in Spherical Shapes (1 of 2) The center of the sphere is closest to the viewer’s eye and must have the greatest contrast in value. Drawing an outline around the whole sphere will attract the eye to the edges.

8. Volume in Spherical Shapes (2 of 2) There’s reflected light in the shadow areas and cast shadow. Think of the sphere as a clock face to position the cast shadow.

9. Summary (1 of 2) Value –Index of light Value scale –Organized way of calibrating grays from white to black Each local color has a value expressed in a particular gray tone. Squint to see values.

10. Summary (2 of 2) Constantly compare values within the drawing and with the subject. The sphere is one of the four basic shapes. The center of a sphere is closest to the viewer’s eye, so it must have the greatest contrast in value.