High-Speed Camera Techniques
Discussions center on ultra-high-speed cameras achieving trillions of frames per second using pulsed light, rolling shutter effects, and software reconstruction, including limitations like readout speed, motion blur, and alternatives such as global shutters or multiple interleaved cameras.
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you can also just use a normal rolling shutter camera at a higher frame rate and blur the frames together.
The camera is not fast in capturing so many frames per second sense. It is fast in capturing extremely short period of time sense. Many packets of photons are sent and many short movies are filmed (with 1000 frames per second or so), and later software joins all the movies together, calculates which frame belongs where and we get this result.
It looks like they don't account for the rolling shutter on the camera.
Could that camera be using a horizontal rolling shutter?
You are aware film cameras use a rolling shutter, too?
They are not trying to record high speed video. A camera may take a picture every millisecond, but it doesn't have to be one camera. They could be using multiple cameras interleaved in time...
This camera doesn't actually take 4 trillion shots a second. It shoots a light, takes a frame, shoots the light, waits a tiny bit longer, takes a frame, and so on.The phase shift is 1/(4 trillion) sec, but the actual framerate is much much slower.
The article talks about this. The rolling-shutter effect means that you can get information out at higher than frame rate.
Does this add any interframe blur or are you controlling that based on exposure time ? Very important for quality Timelapse's
you need a camera that captures at least 2,000 frames per second.