You're right! Also, if you don't have a big tripod, some of those geese will chase you across the park! They can be ferocious. A Leonardo pinhole camera attached to a sturdy tripod makes a formidable self defense weapon, if need be...
had to check out your other pinholes after seeing the x-stream one you most recently posted -- this one is just great too-- beautiful use of light and time (maybe the two things that photography is mostly about)