The "sun was too bright" comment likely was related to the Vision Positioning System not the main camera, so the ND filter would not have come into play.
What exactly happened to your Mavic? And what exactly was DJI's response (beyond "the sun was too bright")?
1. The aircraft responded to the pilot’s control well;
No it did not. If it did I would still have the drone!
2. T=06:12, H=104 m, D=800.6 m, RTH was triggered by the pilot via the remote; there was strong light affecting the performance of the vision system and the aircraft started to ascend to avoid the "obstacles" during RTH;
3. The pilot set 120 m as the max height, so the aircraft kept flying backward to avoid the obstacle when it reached 120 m;
4. T=12:25, H=119 m, D=871.3 m, battery=13%, Landing was triggered due to Critical Low Battery, and the record ended at T=15:00, H=1 m, D=870.6 m, battery=1%
According to the analysis, the incident was not caused by any product malfunction factors. As such, we could not provide warranty service.
It is most advised for you to search for the aircraft around the last recorded coordinate if condition permitted.
If you could not recover the product and consider to purchase another aircraft, we can try to especially apply for a 15% off coupon code which could be used on DJI online store for Mavic Pro without charger and remote:
Buy Mavic Pro Aircraft (Excludes Remote Controller and Battery Charger)
Please email me if you want the coupon code ready, for example: “I accept the offer”. And may I know when you place the order, do you want to ship the aircraft to the United States? Thanks a lot.
There are no obstacles at 120 m. They also said I could have put it in sport mode to change the direction. NOT possible when there is NO contact with the aircraft.
Fact is, they sold me a faulty drone. I paid the $79 to have it replaced, not repaired. They sent me the same faulty drone back and now it's gone.