The exposure triangle is something every photographer really needs to learn and understand. It’s the relationship between ISO, aperture and shutter speed. It’s why a good exposure can have many different combinations of settings. But understanding the relationship between all can be difficult for new photographers to wrap their head around.
This video from Jonathon Walters explains it in the simplest way possible. Using Kool-Aid. It’s an unconventional way of explaining things, but it’s the easiest one to understand. If you’ve ever struggled with the exposure triangle, you won’t after watching this.