Alex Benjamin
Subscriber
First of all, two different things are being confused : high luminance with overall scene contrast range. Second, we don't have any idea what specific film is in mind. So far, it hasn't even been established whether it's a black and white film, color slide film, or color neg film. An onboard camera compensation setting won't do a bit of good unless there's a known strategy to it.
Light metering basics come first.
He did say black and white (post #3), but indeed nothing about which film, nor about how it will be developed.