Ultra-Long Exposure Photos and Digital Solargraphy

More info: https://volzo.de/posts/digital-solarg... Source code, CAD files, and everything else: https://github.com/volzotan/compresso... Do you want to take long exposure images for days, weeks or even months? Solargraphies (pinhole images on photograhic paper that capture months of the sun arching across the horizon) were a thing starting sometime in the 200Xs and this got a lot of people excited for film again. Quite a few people apparently started dropping cans with paper and pinholes in woods and the public urban space and I very much like this idea. But how can we move the art of solargraphy into the digital domain? ---------- Timeline: 00:00 Introduction 01:20 Theory 02:57 The Problem 05:38 Dynamic Range 08:50 Hardware 10:30 Assembly 11:30 Results 12:44 A few remarks 13:45 Outro ---------- Blog: https://volzo.de Twitter:   / vlztn   ---------- Music by Peyruis:    / peyruismusic   Swing [CC BY]:   / swing   ---------- Analog solargraphy images by Willi Winzig [CC BY]: https://www.flickr.com/photos/9241710...