It might not take all the processing power of a K-1 type camera. A number of alternatives are available to the K-1 at much lower cost (see below). One problem such a camera has to deal with is just getting all the sensor data downloaded so it can go on to the next frame. While the K-1 sensor might be able to do 100 frames per second, it's a lot of overkill if low resolution frames are needed, and a custom sensor tailored to the task might be a better choice. In fact, several phone cameras can do "slow motion" at present and may be worth looking at.
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