EarthSky Community Photos
Updates on Your Cosmos and World
Canon EOS M100
Top and bottom of the fisheye image were cropped out.
Maximum light polarization occurs 90° from a light source. The fish-eye lens is a great tool to demonstrate this. Note that the sky becomes lighter again as you go farther away from the Sun. I love demonstrating this to students who visit the observatory. None of them have ever noticed this effect.
The same holds true for Moonlight. The night sky becomes darker as you move 90° from the Moon. Good to know next time there are meteor showers during a bright Moon!
(This an un-processed JPEG image. Vignetting is almost non-existant at this faster aperture.)