Photographic Pinholes deliver premium pinhole photographs by using a thin steel substrate, and ultra-precise laser drilling.
Each pinhole is inspected in production, post-production, and final inspected to triple-insure the quality and precision of each piece.
Your Photo Pinhole comes mounted to an 18mm black anodized Aluminum mounting disc.
Formula for Calculating f-stop
f = fl / d
f = aperture
fl = focal length (distance from pinhole to film)
d = pinhole diameter
Based on Average Camera Dimensions
35mm Camera: 300 Micron Pinhole
4×5″ Camera: 450 Micron Pinhole
Large Format Camera: 900 Micron Pinhole
Focal Length: 35mm = 250 Microns
Focal Length: 3×4″ = 400 Microns