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Questions and Answers
What determines exposure in photography?
What determines exposure in photography?
- Flash power, color temperature, and depth of field
- Focal length, ISO, and aperture size
- Shutter speed, lens F-number, and scene luminance (correct)
- White balance, metering mode, and focus point
What unit is exposure measured in?
What unit is exposure measured in?
- Watts per steradian per square meter (W·sr⁻¹·m⁻²)
- Lux-seconds (lx ⋅ s) (correct)
- Lumens per square meter (lm/m²)
- Candela per square meter (cd/m²)
What does a long exposure in photography refer to?
What does a long exposure in photography refer to?
- A single, long shutter cycle to gather enough dim light (correct)
- Using a high ISO setting to capture fast-moving subjects
- Adjusting the aperture to control the depth of field
- A short shutter speed to freeze motion in a photo
What is radiant exposure measured in?
What is radiant exposure measured in?
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What is a multiple exposure in photography?
What is a multiple exposure in photography?
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Study Notes
Exposure in Photography
- Exposure is determined by the combination of aperture, shutter speed, and ISO (sensitivity of the image sensor)
- Exposure is measured in stops, which represent the doubling or halving of the amount of light that reaches the image sensor
Types of Exposure
- A long exposure refers to a shutter speed that is longer than normal, often used to create a sense of motion, blur, or to capture low-light scenes
- Radiant exposure is measured in joules per square meter (J/m²) and represents the amount of energy from electromagnetic radiation (such as light) that falls on a surface
Multiple Exposure
- A multiple exposure in photography refers to a technique where two or more images are superimposed on a single frame, creating a layered or ghostly effect
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