The tables have rows that reflect changes for different magnification

Column one: subject to film ratio. Current table row equals 1: column's 1 value

Column two: pinhole size in inches, using the Prober-Wellman Formula.

Column three: f/stop of the PinPLUS camera length divided by pinhole size.

Column four: pinhole to the subject distance, for correct subject size on the film.

Column five: subjects horizontal view area for 5 inch distance on the film, for Col. 4 distance.

Column six: subjects vertical view area for 4 inch distance on the film, for Col. 4 distance.