As a photographer, understanding how to properly expose is crucial. HORAGE Lensman 2 Exposure creates a new connection between photography and watches. Its bi-directional rotating bezel allows for ISO 25 to 12,800 and aperture f/1.4 to f/22 to pair - including lighting conditions and shutter speed are engraved on the inner dial ring. Imagine that when you photography to rotate ISO on bezel and current lighting conditions of watch, it will display the optimal shutter speed and aperture value, which will help you calculate the optimal shutter speed and aperture for camera exposure. What genius!