I’m definitely a camera geek in many regards. So I was quite intrigued by the recent video that has been circulating around places like Planet5D and others where photography expert Tony Northrup dives into some very difficult to grasp areas of dealing the unholy trinity of ISO, shutter speed, and f-stop that all camera exposures are build around. It’s a long video, but if you’re serious about really understanding cameras (be it for photography or motion picture) so you can have actual control over your shooting, then I definitely recommend carving out some time to watch this.
Highlights that stuck out to me: I hadn’t given it much thought before, but I think I agree with Northrup that ISO is an officially outdated system since hardly anyone actually shoots on celluloid (film) these days. We need a better system for dealing with digital sensors. Also, Northrup dives into the truth of what’s going on with f-stops and how marketing for lenses often lies to us about what we’re really getting. He doesn’t talk about T-stops, but then I don’t believe he’s a cinematographer so I wouldn’t expect him to deal with that on top of all that’s already being presented. But if you’ve ever want to gain a better grasp of the physics and math of how exposure works, regardless of the camera you’re using, this video is a great place to start!
At any rate, I wanted to share this video. If you’re curious about follow-up questions people have had, follow Northrup’s YouTube channel. There are at least two follow-up videos dealing with comments, complains, and questions people had after watching this video. Check this out and then get out there and shoot!