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Uncertainty in phantom 4 pro camera database.

In pix4d Database, sensor sizer of  phantom 4 pro is given as 12.8333x8.55554 mm. but in the internetit is given as 13.2 x 8.8mm. Can anyone tell me which one is correct? 

Hi Manish Sahu, 

Before adding a camera model to our database we perform a detailed calibration procedure which is described here to ensure the camera parameters are correct. Therefore, I would recommend to use the parameters from the Pix4D camera database. 

Note: DJI’s official website mentions a sensor size of 1’’ CMOS.