Hello, I need to know the exact size of the Phantom 4 sensor. On the website they report a measure in inches 1 / 2.3 , but this measure is that of the sensor ? Diagonal , Width , Height ? On the lens specifications, it informs that has a focal length of 20mm to 35mm value sensor format. So the P4 sensor size is 35mm diagonal ? Having 36 mm wide by 24 mm high ? The sensor is Full Frame? can you help me?