There are two main color models - additive and subtractive. The RGB color model is an additive model used for computer displays that uses combinations of red, green, and blue light. The CMYK color model is a subtractive model used for printed materials that uses cyan, magenta, yellow, and black inks. RGB can produce more colors than CMYK due to differences in how they create colors and color gamuts.

1. COLOR MODEL

4. TWO TYPES OF COLOR MODEL
SubtractiveAdditive
•Light
•Transmitted light
•Inks
•Reflected light

5. COLOR MODEL
RGB MODEL
CMYK MODEL

6. RGB MODEL
• ADDITIVE COLOR MODEL
• FOR COMPUTER DISPLAYS
• USE LIGHT TO DISPLAY
COLOR
• RESULT FROM
TRANSMITTED LIGHT
• RED+GREEN+BLUE=WHITE

7. CMYK MODEL
• SUBTRACTIVE COLOR
MODEL
• FOR PRINTED MATERIALS
• USE INK TO DISPLAY COLOR
• REFLICTED LIGHT
• CYAN+MAGENTA+YELLOW=
BLACK

8. RGB MODEL CMYK MODEL

9. COLOR GAMUT AND COLOR SPACE
COLOR GAMUT IS THE RANGE
OF COLOR CAN BE DISPLAYED OR PRINTED

10. Computers use 24-bit RGB color model that has
256 variation for EACH additive color
RGB MODEL
256 RED 256 GREEN 256 BLUE
VARIATIONS
X X
16,777,216 POSSIBLE COLORS

11. CMYK printing is also known as “four-color
process” or simply “process” color
Achieved by overlapping tints
CMYK MODEL
Tints is a screen of tiny dots appearing as
a percentage of solid color

12. CMYK MODEL

13. WHEN IN DOUBT, SAVE IMAGE AS RGB

14. SCANNING
SHOOTING