Dive more often 2025 program

How do you keep the light under control? How do you combine aperture, shutter speed and ISO into a perfectly exposed photo? I will explain as much as possible about aperture, shutter speed and ISO in a short time. How you can combine these things to gain as much control as possible over your exposure. The exposure of your subject, but also the exposure of the background in your photo. This way you can determine for yourself whether the water in the background of your photo is blue or black.