"A friend of mine built this biplane some years ago. So I thought it was a good idea to take a photo with my selfmade pinhole camera. I used 4 x 5 inch black & white film and enlarged it in my darkroom."
"I built my pinhole camera years ago from kapaplast/kapagraph.
I can use different film holders: 4 x 5 inch film cassettes and
polaroid cassettes. It's also possible to change the pinhole aperture."