More math EEK (sorta) in Day 8 - The Exposure Triangle ... though I like the "rules" or guidelines Darcy provides. They make sense to me:
- If you change your aperture, it changes how long you leave your shutter open.
- If you shoot on a low ISO you can leave your shutter open longer than shooting with a high ISO, because high ISO is more sensitive.
- If your aperture is wide open, you can only open the shutter for a tiny bit of time.
- If you make your aperture smaller, you can open your shutter for longer, because less light gets through the opening.
- If you shoot at an ISO of 100 you can shoot a longer exposure, even with the aperture more open.
- Low ISO and small aperture means the longest shutter speed.
- At an ISO of 100 and an ISO of 400, to get the same exposure, the aperture needs to be a lot more open for ISO 100 than 400.