Okay, this is a question for lens nuts and unusualists. Let's see if I can describe the situation: There is a 'floating' stairway up to my apartment(building owned by me). Two of the risers (kickers) have one inch holes punched in them. They kind of look like someone was making a birdhouse then used the wood for the stairs instead. Behind the stairs is a door that opens onto the backyard. On these sunny days when the door is open the holes project fuzzy images of the backyard and my neighbors house onto the wall facing the stairs. Very cool discovered pinhole camera.
So here's the issue. I want sharper and brighter images. Obviously I can get either by sacrificing the other through narrowing or opening the bird-holes, but I want both and I think the answer is a lens.
I want something that is cheap and durable. My only thought is a glass coke-bottle bottom. Any suggestions?
Obviously, I'm not looking for leica-sharp images, just sharper without sacrificing light. Oh, and I can drill out the holes wider.