VIS301 Fall 2023 Quiz #3

What is a foot-candle?

• A foot-candle is a unit of measurement for weight.
• A foot-candle is a unit of measurement for temperature.
• A foot-candle is a unit of measurement for illuminance.
• A foot-candle is a unit of measurement for time.

What is a foot lambert?

• A foot lambert is a unit of weight equal to one pound.
• A foot lambert is a unit of temperature equal to one degree Fahrenheit.
• A foot lambert is a unit of luminance used the measure reflectance.

• A foot lambert is a unit of length equal to one foot.

Why should we not increase the native ISO of a digital camera?

• To save battery power.
• To reduce the image quality.
• To decrease the exposure time.
• To avoid introducing more noise in the image.

What is a light meter used for?

• To measure the speed of light.
• To measure the color of light.
• To measure the intensity of light.
• To measure the temperature of light.

What is the equivalent shutter speed of a 180˚ shutter angle?

• 1/24

• 1/48

• 1/8

• Equal to the frame rate.

If we double the wattage of a light source we should the expect the number of foot-candles to:

• Triple
• Halve
• Remain the same
• Double

When we shooting slow motion what should we expect to happen to our exposure?

• increase
• decrease
• fluctuate
• stay the same

Narrow the shutter of a video camera will do what to motion blur?

• increase motion blur.
• have no effect on motion blur.
• create a different type of blur.
• reduce motion blur

Which types of lenses are usually fastest?

• Zoom lenses

• Prime lenses

Exposure= Intensity x

• Acceleration

• Time

• Sensitivity

• Wattage