Nobody else has ever been able to duplicate that 14 msec number; I have no idea how imaging-resource got it. The actual pre-focused latency is thought to be about 90-100 msec. Here's my first sequence of shots at 12 fps using the Sharp GP2Y0D810 sensor and an Aerotech Arreaux on an E15-7. Worked well, but it is a bit of a pain getting the sensor positioned within 4 inches of the rocket, I can see the appeal of the lidar. I may play with the ultrasonic sensor, though I have some doubts about beamwidth, range accuracy, and immunity to the noise of the liftoff.