Welcome eager young artists! Ms. Edelman Monday, August 10, 2015  DO NOW: take out your notebook and a pen. Copy and open CMYK color.ppt from the lessons folder on Dropbox.

CMYK:  An SUBTRACTIVE color model in which cyan, magenta, yellow and black inks (pigments) are MIXED together to reproduce a good array of colors.  Used by the professional printing industry. Also known as 4/C PROCESS.

RGB vs. CMYK:  RGB: Additive color  White is the combination of 3 primary light colors  Black is the absence of light.  CMYK: Subtractive Color  White is the natural color of paper  Black results from a full combination of colored inks.

Which one should I use?  RGB:  Art that is for computer display: websites or digital games.  CMYK:  Art that will be printed on paper: brochures, books and posters.

What happens if I use the wrong color mode?  RGB is capable of a wider range of brighter colors than CMYK.  This range is called the color GAMUT.  Colors will “shift” unpredictably when printed.

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PAINT vs. PRINT:  PAINT (pigment: oils, watercolor):  Primaries: RED, BLUE, YELLOW  Best used when designing with color.  PRINT (pigment: ink, toner):  Primary colors: CYAN, MAGENTA, YELLOW, BLACK  BLACK is not actually mixed from the other three colors in order to keep images sharper and cleaner.

What is foreground and background color? Click to set foreground color. Click to set the background color. Switch foreground and background colors. Default foreground and background colors.

What is the COLOR PICKER?  Click on foreground or background squares to access color the picker.

 Use to access Pantone and many other industry wide color models. What is the COLOR LIBRARY?

EREXCIS 2: 1. Create a new document: 3x3”, CMYK, 72 dpi 2. Save as: yourname_CMYK.psd 3. The background layer should be WHITE to simulate “paper”.

4. Create a new layer and name it CYAN. 5. Use the Elliptical Marquee to create a circle in the upper left. 6. Show the SWATCHES palette, found under the WINDOW menu. 7. Use the CYAN, MAGENTA and YELLOW from the 2 nd row. 8. Use the Paint Bucket to fill the selection with CYAN.

9. Duplicate the CYAN layer and re-name it MEGENTA. 10. Select the top magenta square in the Swatches palette. 11. Use the Paint bucket to repaint the new circle. 12. Use the Move tool to drag the magenta circle to the right, but still overlapping the first one.

13. Duplicate the MAGENTA layer and re-name it YELLOW. 14. Select the top YELLOW square in the Swatches palette. 15. Use the Paint bucket to repaint the new circle yellow. 16. Use the Move tool to drag the blue circle to the bottom center, but still overlapping the top two.

17. Select the CYAN layer. 18. Click on the LAYERS MODE popup box. 19. Choose MULTIPLY. 20. Select the MAGENTA layer and also choose MULTIPLY.

What did we just prove?  We created BLACK-ish by mixing the 3 primary print colors: CYAN, MAGENTA, YELLOW.  We created the PRINT SECONDARY colors by combining 2 primary colors: RED, GREEN, BLUE.  The layer blending mode MULTIPLY tells Photoshop to display the layers in SUBTRACTIVE mixing.

What is GRAYSCALE mode?  Discards all color information and converts the file to black only.  Different values are created by using more or less dots of ink.

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