Optical Flow in high altitudes

I would like to know about your experience with opt-flow stabilization.
What is the most reliable opt flow sensor for higher altitudes?
What is the teoretical altitude limit, where opt-flow stabilization could work reliably?
Is there any sensor which could be possible to use it in height of lets say 100m, if i use lidar, which works up to 120m?
Thank you

I believe the px4flow camera has been tested over 100m using a long range lidar but I cant find what the limit is.

Thank you very much for your reply. Based on it, i have found this thread. Anyone know PX4flow (optical flow) Maximum operating altitude? - Hardware / Pixhawk 2 - ArduPilot Discourse . I guess i will have to experiment with different lenses myself now :slight_smile: