H, many thanks for the links.
The responses here make me curious as to how many of our members have actually worked with film and especially worked with cameras without inbuilt metering etc. My first "good" camera was a Pentax S2.........look at the subject, look at available light, weigh up reflections, etc., and then set f/stop and speed and off you go
. I still have all my B&W processing gear, unfortunately, my favourite film, Kodak's TechPan 2415 is no longer available.