Tagged “sunpaper”

1. Cyanotype photography 2
   • 2011 July 31
   • cyanotype,
   • sunpaper,
   • science,
   • fun

   Notes to someone who wants to do this:

   • I modified the lens to be mounted to a toilet paper tube, so I could focus the image. I also cut a hole in the back of the box and taped some waxed paper over the hole so I could see if the image was in focus before taping the sunpaper to the back.

   • Make sure your hands are dry before touching the sunpaper! You will remove the chemical if you do get it wet.

   • You need bright sunlight for this to work. I just did a 1 1/2 hour exposure in bright (but cloudy) weather, and the image was severely underexposed.

   • Lemon juice doesn't seem to make that big a difference to the end colors.

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