Regarding use of camera in drones

Hi we are participating in a robotics competition where we have to find this type of objects and its colour and its shape and its character.(see attached file
My question was can we use the camera lenses provided by you to click photos from 400 ft above the ground and moreover can we use machine learning in the same board

400ft above the ground is very far away. How big is the target? You need to work the math for you to determine if you can see the ground target.

But, yes, we can do the vision processing on board.