In Shutter Priority mode, which parameter is controlled by the photographer?

• A. The shutter speed
• B. The aperture
• C. ISO
• D. White balance

Answer: (A)

Shutter speed is the parameter you control in Shutter Priority mode. By choosing the shutter speed, you decide how long the sensor collects light, which directly affects motion blur and exposure. The camera then adjusts the aperture automatically to achieve a proper exposure based on scene brightness and the ISO setting. White balance is a color-temperature setting and does not determine exposure, while ISO can be automatic or fixed but is not the primary control in this mode. This is why shutter speed is the best answer.