Dropped $180 on a used Sekonic meter for my Bronica and it saved a whole roll shot in a cave near Hermann, MO
My phone light meter app kept reading the wet limestone walls way too bright and every frame came back muddy, so I grabbed the Sekonic off a guy in St. Louis for $180 and the next trip every shot landed, but now I'm wondering if anyone else hauls a separate meter instead of trusting the app.