This past weekend in my normal scroll of the internet I happened upon a post by Philippe Dubost (@philou.cc) who has been posting shots using light painting with a pixel stick to write phrases in Montreal.
He has also posted a video tutorial on how to create the same effect using TouchDesigner.
So I set it up and my girlfriend and I spent some time playing around the apartment drawing with phones and flashlights. What became interesting was that since it was looking for the brightest spot, a reflection on a wall would also trigger the feeback/line to continue.
![](https://static.wixstatic.com/media/b109e8_ed8f8180cd144d08957c61a936ad6405~mv2.gif/v1/fill/w_480,h_304,al_c,pstr/b109e8_ed8f8180cd144d08957c61a936ad6405~mv2.gif)
We than started painting our faces with light, with led to using the flash of a camera to imprint a silhouetted reflection.
![](https://static.wixstatic.com/media/b109e8_0384a8dafa2b4c6089aa86fac12205c3~mv2.gif/v1/fill/w_640,h_406,al_c,pstr/b109e8_0384a8dafa2b4c6089aa86fac12205c3~mv2.gif)
![](https://static.wixstatic.com/media/b109e8_e0eabd88c21a4a349a200358e9519dc8~mv2.jpg/v1/fill/w_980,h_1010,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/b109e8_e0eabd88c21a4a349a200358e9519dc8~mv2.jpg)
![](https://static.wixstatic.com/media/b109e8_79efd85632a34036a7ed09fd89888b3b~mv2.png/v1/fill/w_380,h_285,al_c,q_85,enc_auto/b109e8_79efd85632a34036a7ed09fd89888b3b~mv2.png)
I realized that doing this was the inverse of what photograms were. Rather creating exposures by blocking light, this process was producing similar effects by reflecting light.
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