From a P4Pro test flight for agricultural within crop area variability analysis close to Erfurt for a agricultural application / cooperation. This flight campaign covered a 700×700 sqm area from 100m altitude (85/85 configuration in DJI GS Pro). With the standard battery the P4Pro had 30% battery power left at landing – so overall I believe, that approx. 0.7 – 0.8 sqkm are possible with the larger battery pack – given the illumination conditions are perfect and you can fly fast with short exposures (high shutter speed). Upping ISO with the P4Pro is not a major problem however so going to ISO400 is clearly a possibility (that wasnt the case with the P3A).