4 ms·
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
by bufferoverflow 7y ago
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.
- gugagore 7y agoThe same trick is used by some oscilloscopes for high-time-resolution sampling of periodic signals. I wonder if they also average the same phase-out shift multiple times to reduce noise (improving the bit depth of a single frame).
- ricardobeat 7y agoThat is how these cameras usually work, but not this one; the article describes a system of overlapping, time-shifted exposures instead, from a single event.
- kmm 7y agoThat is how an earlier trillion FPS camera worked, but in this case they do capture a handful of frames of a single event at a 100 femtosecond resolution. https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.193904 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.12...