What is the exposure triangle and how do aperture, shutter speed, and ISO interact to determine exposure?

• A. The exposure triangle consists of aperture, shutter speed, and ISO; changing one affects brightness and you adjust the others to maintain exposure, with aperture controlling light and depth of field, shutter speed controlling duration of light, and ISO controlling sensor sensitivity.
• B. White balance and histograms determine exposure, with ISO setting controlling color temperature.
• C. The exposure triangle refers to ISO, white balance, and metering, where metering sets exposure priority.
• D. Exposure is only controlled by the shutter speed; aperture and ISO do not affect exposure.

Answer: (A)