I was playing around with one of my lenses pretending it was a magnifying glass and trying to focus the light coming through it. I mean, it’s functionally the same as a magnifying glass, the lens is. It has a focal length where all light passing through converges. In this case, the lens converged to the exact shape of the source of light I was focussing: my lampshade. I found it so cool that I had to do the one handed photographing with the iPhone up close. It turned out well enough to share.
Taken with iPhone 4.