Less light makes an image ____ in a digital camera.

• A. Darker
• B. Brighter
• C. More grainy
• D. More saturated

Answer: (A)

Less light lowers exposure, so the image recorded by the sensor becomes darker. When there is less light reaching the sensor, fewer photons are captured, and unless exposure is compensated by widening the aperture, lengthening the shutter, or increasing ISO, the resulting photo will look darker. The other effects listed aren’t the direct result of simply having less light: graininess refers to noise (often a result of high ISO or underexposure handling), and saturation is about color intensity, not brightness.