What describes the amount of light recorded on the film or sensor?

• A. Exposure
• B. Focal Plane
• C. Focus
• D. Sensor

Answer: (A)

Exposure describes the amount of light recorded on the film or sensor. It reflects how bright or dark the captured image will be and depends on scene brightness and camera settings that control light reaching the sensor or film. In practice, exposure is managed by three knobs: aperture (how wide the lens opens), shutter speed (how long the sensor is exposed to light), and ISO (the sensor’s sensitivity to light). Getting the right exposure means balancing these so the image isn’t too bright (washed out) or too dark (lacking detail). If exposure is too high, bright areas can blow out; if too low, shadows lose detail. The other terms describe different concepts: the focal plane is where the image is recorded on the film or sensor; focus refers to sharpness of details; and the sensor is the device that records light, not the amount of light itself.