Basic formula of photographic exposure addition system and its important role in photography

The basic formula of photographic exposure addition system is AV+TV=EV, where AV is aperture value, TV is shutter value and EV is exposure value.

This formula embodies the principle and function of the exposure measurement system, which is of great significance for designing the exposure measurement system or using the camera. By adjusting the aperture and shutter speed, the amount of light received by photosensitive materials can be controlled, thus affecting the exposure of photos.

In photography, the exposure bonus system can help photographers to better grasp the exposure of photos and achieve the ideal exposure effect.