Now here’s a thing. I did a bit on how the clever kids use a light meter. Then I found that a manual exposure estimator from probably the 1950s also had a use.
I was planning to go out for a walk, and obviously planning to take some pictures. It looked reasonably bright outside, but would it make more sense to take faster lenses and film or the slower and sharper stuff?
I remembered I had this little calculator, dating from a time when a light meter would have been an expensive accessory and there certainly wasn’t one in your camera. Dial in the sort of scene you will be shooting in, the weather, time of day, month of year and the film speed. The front of the gadget shows the exposure setting. The values are based on the geographical latitude of the UK, but I expect there must have been versions for most places. So basically, a peep out of the window, a few spins of the calculator and it says I’ll be using 1/125 at f8 on ISO100.
Handy. And it saves taking kit I won’t use. And it’s a lot better than guessing.