focal length

Hi, I searched the internet for info about Phantom 4 sensor size. I need specifically the sensor width as it is required in some photogrammetric software. I found various answers 6.17mm, 6.20mm, 6.24mm, 6.31mm Does anyone know which one is correct? Also the focal length is fixed at 3.61mm but...

Hi, someone can tell what is the focal lenght of the Phantom 4 Pro?

I recently bought a P3S, and tried it out. I was surprised at how great the flight characteristics and gimbal were, but also at how terrible the range was - I was getting constant video cutouts and interference warnings at ~100m in wide open parkland in suburbia. I looked into firmware, antenna...