| Camera Obscura - how we really see things
      Submitted by Jeff Buster on Tue, 05/07/2013 - 23:01. 
    How does a hole in the wall act as a lens?    How does the diameter of the hole in the wall act with regard to focal distance? The image above has about a 4 foot focal distance. Camera Obscura - lots to learn! Image: George Samuel - about 3.5 minute exposure. ( categories:  ) |