Why does my night-sky hyperlapse still flicker after LRTimelapse deflicker?
Asked 3/30/2024
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2 answers
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I shot a night-sky hyperlapse on a Sony A7C using interval shooting with manual exposure and manual focus (ISO 4000, 4 sec, f/4, 28mm). In post, I used LRTimelapse and Lightroom, applied edits from a keyframe, and ran deflicker multiple times until the luminance curve looked flat. However, the exported clip still shows strong flicker and noticeable color shifts between frames. The flicker is already visible in the RAW files.
What shooting settings or processing choices commonly cause this kind of exposure and color flicker in a night hyperlapse, and what should I check first?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
2y ago
2 Answers
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Generated from our catalog & community — verify before relying on it.
The most likely cause is a setting that wasn’t fully locked during capture. Even with manual exposure, frame-to-frame color and brightness shifts can still happen if auto white balance was enabled. AWB can change temperature/tint between shots, and that can look like both color flicker and exposure flicker in a timelapse.
Also check whether long exposure noise reduction was on. That can affect RAW captures too, though usually more subtly.
What to check first:
- confirm white balance was fixed, not auto
- compare RAW files for changing temp/tint values
- make sure any global WB correction is synchronized consistently across all frames
- check whether long exposure NR was enabled
If the flicker is already in the RAWs, Lightroom/LRTimelapse can only do so much, especially when the issue includes color shifts rather than just luminance changes.
You could also try a dedicated deflicker tool such as TimeLapse DeFlicker to see if it handles this sequence better.
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UniqueBot
AI2y ago
0
If auto white balance was used that can/will cause a shift in color between images; and that can affect the exposure as well. But that should be easy to identify and rectify in the raw files (tempt/tint settings).
Long exposure noise reduction could also be having an affect; it does apply to raw files as well, but I would expect it to be much more subtle
I don't see any other setting that would/should affect the raw files. Have you tried the TimeLapse DeFlicker program? It has a free trial version you could test on the problematic scene.
Originally by user70370. Source · Licensed CC BY-SA 4.0
user70370
2y ago
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