Camera Obscura

Before today I had used a pinhole camera a couple times, so I knew the image would be upside down and a negative projection. The first time we looked at the image, it was on a medium size piece of paper and the image appeared immediately. I could clearly see the upside down image of the courtyard projected onto the paper. When we took the medium paper away to see the image on the white wall, the image wasn't as clear. I could see where the sky should be on the bottom and the building above it, but it was a lot harder for my eyes to focus to see the actual image. I think if I saw, or at least knew, what was projected onto the wall before hand it would have been a little easier to focus.

This is a drawing of the image from the second camera. My drawing doesn't do much justice to the true image because the ball was a lot more 3-D.