CIST 1550 Illustrator Chapter 11

Teresa Stillings

Skills Review 11 Sleep Center

Project Builder 11-1 USAchefs

Project Builder 11-2 City Square

Design Project 11 Oahu 2

Portfolio Project 11 Chef Output

Skills Review Questions:

1. List the seven distinct colors of the visible spectrum (rainbow).

Red, orange, yellow, green, blue, indigo, and violet.

2. What are the three additive primary colors?

Red, green, and blue (RGB).
RGB cannot be reduced or broken down. They are combined to produce other colors.

3. What are the three subtractive primary colors?

Cyan, magenta, and yellow (CMY).
Each is produced by subtracting one of the additive primary colors.
Overlapping all three colors would absorb all colors

4. When red, green, and blue light are combined equally, what color light do they produce?

white light.

5.Explain the term subtractive, in terms of the subtractive primary colors.

Cyan, Yellow, Magenta are subtractive primary colors. The term subtractive refers to the fact that each is produced by removing or subtracting one of the additive primary colors (RGB).



6.Explain the term transmission in terms of light striking an object.

Transmission occurs when light strikes an object and passes through the object. Any object that transmits all of the light that strikes it becomes invisible.
An object appears as the color cyan if it absorbs all of the red light and reflects or transmits all of the green & blue. Cyan is also know as "minus red" to printers.

7.Which additive primary color would be 100% absorbed by a perfect cyan ink?

Red.

8.Which additive primary color would be 100% absorbed by a perfect magenta ink?

Green.

9.What additive primary color would be 100% absorbed by a perfect yellow ink?

Blue.

10.What is the fourth color in the four-color printing process, and why is it necessary?

Black (K). Black produces deep shadows and fine detail. It also used as a "key" for aligning or registering the four colors in printing.

11.What is the difference between a vector graphic and a bitmap graphic?

Vector Graphics are created with lines, curves and are defined by mathematical objects called vectors. They use geometric characteristics to define the object.
Vector graphics have no pixels thus they have no resolution. They are resolution independent.

Bitmap Graphics are comprised of a rectangular grid of colored squares called pixels. Pixels are a contraction of "picture elements".
They are the most common medium for continuous tone images or digital photographs. Bitmap images or graphics are resolution dependent. The number of pixels in a given inch is reffered to as the image's resolution.

12.What does effective resolution mean?

The term effective resolution refers to the resolution of a placed image based on its size in the layout. The size of the image has a direct effect on the image's resolution.
Reducing a bitmap image increases the effective resolution thus improving your image quality. Enlarging a bitmap image beyond 10% results in a loss of quality and decreases the effective resolution.
It is best to create bitmap images at both the size and resolution that they will be used at the final output stage.

13.Why are Illustrator graphics called resolution independent?

Vector graphics have no pixels, thus they have no resolution. Vector graphics can be enlarged or reduced without loss of resolution so you don't have to worry about quality.