What is the reason for line skipping.

[rejdmast]

Does anyone know exactly why Sony has to do line skipping at 480 and 960 fps with the FS700?
Is it because the data can't be read off the sensor fast enough, the cpu can't process it fast
enough or it can't be written to the buffer fast enough or something else?

 

[Chris Johnston]

Just guessing but it's probably not the buffer. (that should be a nano second thing)

Cpu is probably just not enough. (could be a combo of both cpu and sensor but not likely)

I'd say if the sensor can output 960fps on half the lines it could probably do it on all the lines if you had enough light and a big cpu to take what it shoves out.

but then I'm not an engineer, and I've never played one on TV.

 

[Nirv]

Does anyone know exactly why Sony has to do line skipping at 480 and 960 fps with the FS700?
Is it because the data can't be read off the sensor fast enough, the cpu can't process it fast
enough or it can't be written to the buffer fast enough or something else?

Could be any of those factors.

My guess it's likely to be the bus speed or buffer memory speed but only Sony would be able to tell you.

The lower frame rates with optical flow may provide better quality than the very highest fps modes. I'm amazed how well 50 fps works with optical flow on the FS100 so 100 and 200 fps should be excellent.

 

[Razz16mm]

Camera processor has a maximum limit to the number of pixels per second it can process. Higher frame rates= fewer pixels. The choices are crop to a smaller sensor area, line skip, or bin to get the pixel count down. Binning is the least efficient of these for speed.