According to the theory of reciprocity, what is true regarding photo opportunities?

The theory of reciprocity in photography states that there is a relationship between exposure duration and the amount of light. When you change one aspect of exposure, such as aperture, shutter speed, or ISO, you can adjust the others to maintain the same exposure level. This means that if you have a certain amount of light available, you can achieve the same exposure with various combinations of settings. For example, you could increase the aperture (allowing in more light) and decrease the shutter speed (allowing light to hit the sensor for a longer time) to achieve the same exposure.

This flexibility in exposure combinations is crucial for photographers, as it allows them to be creative and make choices based on the shooting conditions and desired outcomes, rather than being locked into a single exposure setting. The concept highlights the versatility and artistic control that photographers have when it comes to exposure, reinforcing the idea that there is not just one correct way to capture an image in a given situation.