Stuck a black piece of paper, with a little hole in the middle, over my lens to create a pinhole effect. The hole was a bit too small to start off with so cut it a bit bigger. Sometimes I couldn't focus, so switched to manual focus. Had fun with experimenting.
I want to make a little pinhole camera with film now!
been trying the same thing, you have got such a sharp detailed picture. My son made a film pinhole out of cardboard a few years back using details of a website , the results were poor. I have ditched the lens drilling a hole in a body cap, with a pinprick piece of matt black plastic taped to it , tomorrow I test..This is really good the vignetting drawing detail to the eyes, super portrait...