Spiral anomalie


TPF Noob!
Jan 14, 2021
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I took this photo with an old Nikon Coolpix S3 camera, and iam not able to figure what could have caused that spiral light anomalie, that seems to be flying over the girl...
Yup that's an interdimensional class 4 entity if I ever saw one!!!
I'll take, "Using a 2-second shutter speed" for $500, Alex.
I think you either stumbled onto the set of the Twilight Zone or of Back To The Future Pt. lV!!!
is there an airport in that direction?
Let me expound my previous answer: You used a speedlight and the camera was set to a 2 second exposure. When you pressed the shutter button, the shutter opened, the speedlight fired, and that created the exposure of the people and the reflections in the sign, fence, tree and cars.

However, the shutter stayed open for another 1.9833 seconds. With an aperture of f/3.03 and an ISO of 200, that's more than enough for the LED streetlight in the background to be recorded as a streak of light across the sensor as you moved the camera down and to the left after you saw the flash. The odd shape of the light trail is cause by either a high-speed dimming of the LED that basically turns the LED on and off really fast. So fast you can't see it. Or a result of the rectification of AC to DC and the LEDs are pulsing on/off 120/second. 100/second if the AC system is 50Hz.
Come on Sparky your answer was to logical. Everyone likes a good UFO story. :)

Actually I was about to guess a laser pen but your explanation makes more sense.

So much for my second idea of a mutant firefly.
Streetlights typically don't move.

My guess is some type of firework like a bottle rocket.

My second guess is the vanguard of an alien invasion.
Um, streetlights don't move, but cameras do. As stated above, it was a 2-second exposure. Press the shutter button, shutter opens and flash fires, and as he pulls the camera down, the shutter is still open. The foggy colors in the background are motion-blurred items lit by the street light. No motion blur close, as the close area was very dark; just the flash exposure, as was intended. Also, the flash exposure was low because of the street sign reflection fooling the metering.
ninja space monkeys.
Yeah, that is for sure a street light as most pulsate (turn on and off fast like Sparky said), that is why it looks like a ribbon.
I do that type of shot all the time........
Street light........
The long exposure time would have kicked in your camera. It would have resulted in this light painting effect.
This remind me of the time I tried to autograph a picture of my old film camera.

In a darkened room with my digital; I set a 20 sec. the shutter time, took a flash photo and then wrote my name on the wall behind in the remaining dark time.

Theory hit the cold light of reality, when I tried to write R O N with a laser pointer on the wall behind.

My penmanship was never very good. :) :)

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