Using smartphone metering apps
There are a lot of great smartphone metering apps – they all pretty much work the same and produce great results. These were all captured on 35mm TMAX 400 with a Leica M3 which doesn’t have a light meter.
I used the Lumu light meter app. Black & white film has amazing exposure latitude, so it’s best to err on overexposure. You don’t always need to meter for the shadows, though. On occasion, depending on the light, sometimes you’ll meter for the highlights.