The Exposure Triangle Without the HeadacheThink of Light as a BudgetImagine you have a fixed amount of light to spend on each shot. Aperture

The Exposure Triangle Without the HeadacheThink of Light as a BudgetImagine you have a fixed amount of light to spend on each shot. Aperture, shutter speed, and ISO are the three ways you can allocate that budget. Opening the aperture (using a lower f‑number) lets more light in, so you can either speed up the shutter (reduce motion blur) or lower the ISO (keep noise low). Closing the aperture (higher f‑number) does the opposite: you need a slower shutter or a higher ISO to maintain exposure. By treating the three dials as interchangeable parts of a single equation, you stop...