Light Test

Self administered test on light

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Question 1.  Referring to Figure 1.  There are three pairs of colors.  Each pair represents one of light's characteristics: hue, saturation and lightness.  Which pair represents what characteristic?

1. Answer
   1. Pair A represents hue.  Hue is basic color.  The color chip on the left is the hue blue.  On the right, the hue red.  Pair B represents Saturation.  The color chip on the left is a dull green.  The one on the right is a richer green.  Therefore, the right one is more saturated.  Pair C represents Lightness.  Both color chips are magenta, but the one on the left is a lighter tone than the one on the right.

Question 2.  When using an exposure meter, which of the following is true?

1. The exposure meter needs to know the film or sensor speed (ISO).
2. The exposure meter needs to know whether the film is color or black and white.
3. Exposure meters are not needed for digital cameras because digital cameras do not record light, they record pixels.
4. Exposure meters are only needed with low light conditions.  Otherwise, there is plenty of light to take a picture.

1. Answer
   1. A is the correct answer.  In order for an exposure meter to calculate an exposure, it must know how sensitive the film or sensor is to light.  The ISO rating gives the exposure meter this information.  Answer B is incorrect because exposure meters do not sense hue, only the quantity of light.  Answer C is incorrect because digital cameras do record light and 'store' it as discrete information units called pixels.  Answer D is incorrect because exposure meters are used to measure the quantity of light.  Whether there is a little or a lot does not matter.

 

In Figure 2 to the right, are five color chips labeled A, B, C, D and E.  Each color chip represents one of the following tones.

• Black
• Dark
• Middle
• Light
• White

 

Question.  Which color chip letter goes with the above tones?

1. Answer
   1. Color chip A is dark tone.
   2. B is white.
   3. C is light tone.
   4. D is black.
   5. E is medium or mid tone.