Which of the following factors is important for achieving a correct exposure?

The correct answer includes aperture, shutter speed, and ISO as crucial factors in achieving a correct exposure in photography. Each of these components plays a significant role in controlling the amount of light that reaches the camera sensor, thus affecting the brightness of the image.

Aperture refers to the opening in the lens that determines how much light enters the camera. A wider aperture (smaller f-number) allows more light to hit the sensor, while a narrower aperture (larger f-number) reduces the light. This not only influences exposure but also affects depth of field, determining how much of the image is in focus.

Shutter speed controls the duration of time the camera’s shutter is open. A fast shutter speed allows for less light to enter, which is useful in bright conditions or for freezing motion, while a slower shutter speed lets in more light and can create a motion blur effect, which is often desirable in low light conditions or for artistic purposes.

ISO is the sensitivity of the camera’s sensor to light. A higher ISO setting increases sensor sensitivity, allowing for better performance in low-light situations but can introduce noise, which degrades image quality. Lower ISO settings produce a cleaner image in brighter environments.

By balancing these three settings—aperture, shutter