In Shutter Priority exposure mode, which parameter does the photographer actively control?

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

Answer: (A)

In Shutter Priority mode you actively control the shutter speed. This is the setting that determines how long the sensor is exposed to light. Choosing a fast shutter speed freezes motion, while a slow shutter speed creates motion blur. The camera automatically selects the appropriate aperture to achieve a correct exposure for the scene, based on the shutter speed you set (and usually the ISO as well, depending on the camera’s settings). White balance is not part of this mode; it adjusts color regardless of exposure. If lighting is very bright or dark, you can adapt by changing the shutter speed, ISO, or lighting to maintain the desired exposure.