What is often adjusted on a camera for achieving proper exposure?

Achieving proper exposure in photography is a multi-faceted process that involves adjusting several key settings on the camera. Each of these settings plays a crucial role in determining how light is captured by the camera's sensor.

Aperture controls the amount of light that enters the camera through the lens. By adjusting the aperture, you can increase or decrease the light hitting the sensor, which directly influences exposure. A wider aperture (a smaller f-stop number) allows more light in, while a narrower aperture (a larger f-stop number) restricts light.

Shutter speed affects the duration of time the camera's sensor is exposed to light. A faster shutter speed allows less light to hit the sensor for a shorter period, which is useful in bright conditions or when capturing fast-moving subjects. Conversely, a slower shutter speed lets in more light for a longer duration, which is useful in lower light conditions.

ISO measures the sensitivity of the camera's sensor to light. Increasing the ISO can help achieve proper exposure in darker environments without adjusting the aperture or shutter speed, but it can also introduce noise into the image if set too high.

Since proper exposure can indeed be reached by adjusting any one of these settings—individually or in combination—it's clear that considering all