>>3569856I use calipers with a plastic depth gauge to measure distances for focal length then use the calculators online to get the rest of the info. I use super macro shots to take pics of then measure the pinholes I make, checking them for size and shape.
https://mrpinhole.com/calcpinh.phphttp://www.bobatkins.com/photography/technical/field_of_view.htmlI only work with digital camera pinholes. I have some fast pinhole caps that can be used handheld on a sunny day at ISO 100 or bumped up a bit on ISO in darker areas, but still handheld.
