Hereby I would like to thank to Mr. Paul Prober and Mr. Bill Wellman for publishing their study on optimum pinhole camera design in terms of image sharpness. The calculation of the pinhole diameter in the form below is based on the equation published in their paper. Reading the article will help you understand the factors involved in pinhole image sharpness and choose the parameters according to intended use of your pinhole camera.
Pinhole Diameter and F/Number
Enter intended image distance, magnification and focal length and press the button to calculate the pinhole diameter and corresponding f/stop |
Image Distance / mm
"Focal length" of the camera |
Magnification
0.005 for landscapes and architecture
0.01-0.1 for portraits, still life and close-ups
0.1-1 or more for macro
|
λ / nm
Wavelength (color), approx.
450 560 590 650 |
|
| Pinhole Diameter / mm | F Number |
