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Raster Graphics- Oral Exam Questions

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The following is a list of questions that you may be asked in your oral exam. Other questions related to raster imaging may also be included, and follow-up questions related to your answers are likely. Each student will meet with the instructor individually, either during or outside of class to complete the oral exam, which will take from 5-20 minutes. You will be informed of your grade at the completion of the exam. Students wishing to re-take the exam will be required to schedule a second exam no sooner than one week after the initial exam. The second exam grade will replace the first grade, with no penalty for earlier failure.

Part ONE
What is a pixel?

  • What is a pixel made of?
  • What does it mean when we say a pixel (or layer) is “transparent”. What happens to the pixels?
  • What does "dpi" stand for, and what is its relationship to a digital file?
  • What is a mega-pixel?
  • What does it mean when we say that an image is "pixelated"?
  • What three aspects of pixels can Photoshop alter?
  • When you change the size of a photoshop image, what happens to the pixels?

What is resolution?

  • What is "ppi", and how is it different from "dpi"?
  • If an image is three inches by four inches at a resolution of 200ppi, how many pixels does it contain? (you may be asked a different problem-don’t just memorize the answer)
  • What is the difference between print size and image resolution?
  • What is the relevance of the term 72dpi? Is it good? Explain.

 

Part TWO
What is light?
What is color?

  • How is an Xray light, and how is it notlight?
  • What are additive and subtractive color systems?
  • 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") Explain.
  • What do CMYK and RGB stand for?
  • What is the difference between CMYK and RGB color? Which is better?
  • What is an "out of gamut" color?
  • What is indexed color?
  • What is hexadecimal color?
  • Is magenta a color? Why or why not?

 

Part THREE
File Formats

  • What are the advantages and disadvantages of the following file formats:

  • jpeg

  • psd

  • gif

  • png

  • tiff
  • RAW

Printing

  • What's the difference between a halftone (or bitmap) image and a grayscale image?

  • How does a laser printer work?

  • How does an inkjet printer work?

  • What are advantages and disadvantages of each?

  • What is a printer profile?

  • What is the difference between screen resolution, print resolution, and image resolution?

 

Part FOUR
Photoshop Terms

  • What’s the difference between a layer and a channel?
  •  What’s the difference between a path and a selection?
  • Explain three ways to make a new layer.
  • How is a background layer different from a layer named “background”.
  • What are layer effects? How do you use them? What are some common layer effects?
  • What is a blending mode?
  • What is the difference between a “hard” brush and a “soft” brush?
  • When was Photoshop born?

Artists

  • Name and describe the work of at least 3 living artists.
  • What is the difference between “Modern” and “Contemporary” art?