Light and Color
Helpful Links
Links to sites about Color Theory (read all of them)
Benjy's file format comparison page
These are the questions that will be included on your second quiz:
Factual Questions:
What is light?
What is color?
What is the definition of the term "primary color"? (red, yellow and blue are examples of primary colors, not the definition of the term "primary color")
What are additive and subtractive color systems?
What do CMYK and RGB stand for?
What is the difference between CMYK and RGB color? Which is better?
What is GRGB, where do you find it, and why is there an extra G?
What is the difference between sRGB and AdobeRGB (1998)?What is a color gamut and what is an "out of gamut" color?
What is indexed color?
Is magenta a color? Why or why not?
Your Opinions:
What was the most confusing question?
What was the most interesting question?
What was the most useful website/page?
For homework read the links, and use Google to find the answers to all of these questions, and write them out with a pen or pencil on a piece of paper. You will be turning in your hand-written answers for credit.
Lesson
Make a color comparison file to see for yourself the subtle changes that occur when you change image modes.
First, find an image on the web, and open it in Photoshop. Make sure it has a wide variety of colors. Now make a comparison image of what it would look like in different color modes. Here's how:
Convert the file to CMYK and take a snapshot of the middle of the image.
Undo the conversion, and convert it to Indexed color (64 colors). Take a snapshot of the bottom of the image.
Undo the conversion again. Open the two snapshots, layer them on top of the original and add text to indicate which is which. Look at the subtle color variations. Save both the .psd file and also save for web as a jpeg.
Here's my example:
What you need to do:
Read this page carefully.
Read the information on the links.
On a piece of paper, with a pencil or a pen, write out the answers to the questions listed above.
Make your color comparison file as described above.
What you need to turn in:
Your color comparison file, named it "color_astudent", and your handwritten answers to the questions above.
What I will be grading:
You will get credit for completing and submitting your color file correctly and for completing your answers to the questions above.