But What IS A Lens Flare?

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A lot of people took pictures of the recent solar eclipse in North America and got photos where there’s a ghostly image of the eclipse floating in the sky nowhere near where the sun is!

REFERENCES:
Lens flare prediction based on measurements with real-time visualization https://doi.org/10.1007/s00371-018-1552-4
Physically-Based Real-Time Lens Flare Rendering http://doi.acm.org/10.1145/1964921.1965003
From the Series of Articles on Lens Names: Tessar, by H. H. Nasse. Carl Zeiss Camera Lens Division March 2011

https://www.cambridgeincolour.com/tutorials/lens-flare.htm
https://www.toolfarm.com/tutorial/in-depth-lens-flares-for-video/
https://petapixel.com/what-is-lens-flare/
https://www.maxon.net/en/red-giant/vfx-suite/real-lens-flares

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Видео But What IS A Lens Flare? канала minutephysics