Archive for the ‘Light Art’ Category

This slideshow requires JavaScript.


Read Full Post »

Part 1

Why Is It Important: Learning to distinguish grayscale values develops skill of observation.  It is useful when you draw objects lit thorough different sources of light. It helps you to distinguish the value of highlight, reflected light or a shade. Seeing right midtone values is a key to realistic drawings.

Experiment: Let’s go to ColorExplorer website and pick one hue, lets say red. On the left side of the box, you will notice that hue turns into white, gray and black. Move the curser up and down along the left rim of the square. Observe RGB values, which stand for red/green/blue. What do you notice? You will notice that when you move your curser from the top left angle towards the bottom left angle, red, green and blue values recede and eventually turn to zero.

Discussion: Black is absence of color. In this case, since it’s a computer system and not the real world, it means that black does not have  red, green or blue. White is composed of of all color. In computer world it means that white has maximum capacity(255)  of red, green and blue. Rainbow is a good example on how white light is composed of different colors.

Part 2

Try Out: Divide the grayscale into 8 parts and create a color reference grid such that white is a number one and black is a number eight. Create different tones of grayscale. If you decided to use ColorExplorer, then you can proceed the following way. Divide 255 of red, green and blue(maximum for color in computers) by 8. You’ll have an amount equal to approximately 32. Take a midpoint of 32 and record that information for your grid.

Discussion: Grayscale grid is achromatic (no hue) value range. Any RGB value from 0 to 128 is called shade and any value from RGB128 and up are called tints. Left side of color square is actually a value grid and it is usually measured in percentages. In the exerciced, if you used the ColorExplorer, you probably noticed that when you canged RGB values, the Value box also changed numbers. It actually shows the percentage of white (all color) within that value grid.

Part 3

Use Your Knowledge: This is a grayscale copy of a painting done by Kangin, O. Winter. First, look at your grayscale grid and try to identify values on this picture. Second, record them, you can write on this picture. Third, create a rough sketch. Don’t pay attention to details, jsut spots with values.


Read Full Post »