ISO measures the camera's sensitivity to ________.

ISO measures the camera's sensitivity to ________.

• A. Color
• B. Light
• C. Distance
• D. Contrast

Answer: (B)

ISO describes how sensitive the camera sensor is to light. When you raise ISO, the sensor amplifies the light signal more, so you can shoot in darker conditions or with a faster shutter speed while keeping the exposure balanced. Lower ISO is best in bright light to minimize noise and retain detail. Color, distance, and contrast are different concepts: color relates to color reproduction and white balance, distance to how far the subject is (affecting focus and framing), and contrast to the range of light and dark tones in a scene. So the measure that ISO represents is light.

ISO describes how sensitive the camera sensor is to light. When you raise ISO, the sensor amplifies the light signal more, so you can shoot in darker conditions or with a faster shutter speed while keeping the exposure balanced. Lower ISO is best in bright light to minimize noise and retain detail. Color, distance, and contrast are different concepts: color relates to color reproduction and white balance, distance to how far the subject is (affecting focus and framing), and contrast to the range of light and dark tones in a scene. So the measure that ISO represents is light.