High speed camera

I'm thinking you are looking for a high speed camera that can shoot videos at ultra low speed then I would recommend you 50 MP 10 GigE Cameras. Emergent Vision Technologies recently launched these. They have 50 Megapixels and can shoot videos at ultra low speed with 23 frames per second.

This type of camera are usually used for industrial purposes or big sports events for example football matches similar to goal line technology cameras.

If you are looking for normal/daily use purposes then I need to know your budget and for what purpose you wanna use it so that I can better answer your query. If you already have a good camera then you can boost its performance by adding Sony Imx250, Imx252, Imx253, Imx255 to it.