They're light and easy to [make]!
I slammed out a body cap pinhole lens for pinhole day in like an hour (utilizing a drill Dangerously). I made it with a thumbtack so it's not a super good pinhole, but it does make images. I winged the exposure so they're like 30s-2min. I overcooked it with that much exposure, though. The flowers here I had to scan with 3x exposure to get the centers to come out of the petals.
It's very cool how you can get long exposures with nothing actually in them. Those three ducks were taking a nap but I think there were maybe two or three others wandering around on the ramp, and they're just gone.
