Yeah, I'd tend to agree, probably due to combining the images into an HDR shot. I’ll take a look at the individual images and see if there's a better one.
Here's a couple of more from the original 5 shot set (unedited). Are they any better...
It’s fine as long as you don’t plan on using your DJI warranty while the drone is still covered.
As for the third party batteries you're considering, it's hard to say how they'll perform compared to DJI's. I wouldn't assume all batteries from...