I'm trying to find a drone/camera combination that will allow me to image footprints on the ground from 20m altitude. To do this, I first need to be able to see the footprints trails from the air. I've tested some 12Mpix cameras on a DJI phantom 3 advanced and a Mavic and they just about pick out a trail on the FPV (iPad).
I know that increasing to a model with a 20Mpix camera will improve the resolution of still images, but will it improve my ability to see the trails on the FPV?
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