1. Color Modes
Photoshop

2. Color Modes
Use to display and print
Which do we use

3. We use mainly
CMYK
RGB

4. PS Modes:
No indexed

5. Change Modes

6. Questions Which of the 2 models do we choose for print?
Which of the two models has the smaller gamut?
How many colors can we show that are pure blue, green, red?
If the RRGGBB values are the same, what color is created?
What color (generically speaking) is #CCCCCC
Cmyk, cmyk, 256 for each color, shade of gray

7. Total number of bits in a pixel?
How many colors can we display2^24
2 ^ 24 = 16+million

8. These are the colors of light
What we see—every color we see is made up of R,G,B
How do we get yellow?
There are colors we cant see
I’d show them to you but you couldn’t see them
R + G

9. Color you cant see See a Color Humans Can't See | Big Think
_embedded

10. A Color You Can’t See

11. Download powowsmall.jpg
Move cursor over the scarf
Which color (RGB) do you think is highest?

12. Info Window shows rgb values

13. CMYK
Each pixel is assigned a percent valuefor each of the process inks
i.e.100% 0% 80% 2%
E bright red miagth be
2%Cyan 93% Magenta 90%Yellow 0%k
Pure white—all equals zero
RGB values outside CMYK gamut are adjusted to comply with CMYK

14. Gamut Issues
Edit as much as can in RGB

15. Switching between RGB and CMYK
Draw 3 marque rectangles, pure colors for example

16. Switch to CMYK
Washed out colors:

17. Switch back to RGB
Have los
Here is new green:
t RGB values

18. END
Develop in RGB, change to CMYK

19. Two Content Layout with SmartArt
First bullet point here
Second bullet point here
Third bullet point here
Group A
Group B
Group C

20. Switching between RGB and CMYK
Use rectangle marque