how to level a good pix

adobe RGB ( gives a wider range of the color. it is good for printing)
sRGB ( good for website. color range is smaller)


1. RGB mode
2. on the layer panel > level > find white

3. press Alt ( to find the brightness spot)
4. press shift ( to indicate the number 255) and mark it as #1 RGB255

5. press Alt ( to find the blackness spot)
6. press shift ( to indicate the number 0) and mark it as #2 RGB 0

7. on the layer panel > curve > lower down the most black and most white 5% (18)
8. match the curve on the grids cornner point.

9. save the file as psd. to save the hard drive space.
10. flatten the layers for the printing quality.