Scientific and other projects in astronomy, geoscience, physics, and electronics.
Tuesday, November 20, 2007
infrared and visual split image
The Canon A540 does leak some near-infrared radiation through its IR blocking filter. I placed a two layer filter of exposed and developed color negative film in front of the camera for the infrared image.
1/2s at f/2.6 for the near-IR image. 1/400s at f/4.0 for the normal image. That's about nine stops difference.