Flashlights, Fog and Digital Cameras at Night
Both pictures were taken with one second hand held exposures on my Canon S40, with the 'film speed' set to ISO 400. Both unedited, other than scale and crop. Neither being terribly sharp on account of the hand held one second exposures.
On a time exposure, any moving light makes for a streak. That is the whole idea of the light painting. We got a little fancy in terms of making the streaks by actually throwing the flashlight in the air. The flashlights were Petzl Tikka LED headlamps. With the small size of the lights, and the soft snow, there was no risk of damaging them, and with them lighting up in the snow, no risk of losing them either.
The streakiness of the beams is because the headlamps were spinning in the air as
we threw them, and they weren't always facing the camera.
For the final photo, we had the idea of tying the light to a string, to make for even more interesting paths traced out by the light. I had the light facing away from the string, so for the back part of the arc, the flashlight doesn't show.
Almost looks like swirls of some colour in some highly viscous fluid that has been stirred some.
I should also add that these sorts of experiments probably don't work well in densely populated areas. You need the kind of darkness where the sky is just full of stars. It never gets dark enough for this in the city.
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