The scope of photography How wide is the scope of photography?

The lenses used by cameras are similar to those of SLR cameras. They are arranged according to the frame size into 2.8mm, 3.6mm, 4mm, 6mm, 8mm, 12mm, 16mm, 24mm, etc. The smaller the number of millimeters, the wider the image taken by the lens, but at the same time the closer the distance it illuminates; the larger the number of millimeters, the narrower the image captured by the surveillance camera, but the farther the distance it illuminates at the same time.