So I shot my first zone plate images the other day, using the Pentax 67 zone plate cap (f64) that I made using a Pinhole Resource zone plate. For fun and for reference, I shot lensed images alongside each shot, using the 110mm 2.5 lens. The camera was mounted on a tripod and the zone plate exposure was 8-Mississippis long (using Pinhole Assist as a meter).
The film was Ilford HP5, developed in Cinestill Df96 monobath, scanned using a Nikon D610 and Negative Lab Pro.
Pretty happy with this, though I need a better black background to have it go fully dark, which is what I intended.