1, RGB mode
RGB color model is superimposed on the basis of black
RGB is the human eye imaging principle
RGB: playing brilliant black → white 
R & lt : 0 ~ 255 (Red)
G : 0 ~ 255 (green)
B : 0 ~ 255 (blue)
When the value is 6 when fColor is white
When the same RGB valuesColor is gray
2、CMYK
CMYK color model is superimposed on the basis of white
CMYK printing principle
CMYK: Yuemiaoyuehei white → black
C : 0 ~ 100 (cyan)
M : 0 ~ 100 (Magenta)
the Y : 0 ~ 100 (yellow)
K : 0 ~ 100 (black)
when the CMYK values show is (100 * 100 * 100 * 0) when the color is not pure black; only when their value is (100 · 100 · 100 · 100) when rendering color is pure black.
ctrl + u: Hue / Saturation
3, Vector
Picture is a small point of a composition, amplification without distortion.
4, Bitmap
Bitmap only two colors of black and white
1:
2:
3:
How can an ordinary picture into a bitmap
→ → gradation pattern image (gradation throw) → Bitmap
Note: Only the general picture first convert it to grayscale (throw away color) can be successfully converted to bitmaps
5, file format
Note:When the larger the value, the more delicate image channel
8: 8 th power of 2
16: 2, 16 th
32 th power of 2: 32
6, Lab Color Mode
Note:Only RGB mode to turn the index, after the transfer finished become dirty gray map.
L: lightness (luminance)
A: color channel
b: color channel
1 byet (byte) = 8 bit (bit)
Note: When the election only web-safe colors, there will be clear boundaries between colors
Note:ps pictures (RGB mode) To print into a picture, RGB mode must be converted to CMYK mode can be printed.
Proof Setup view → → Work CMYK
