OK ... reading these comments together explains the issue you are having.
You haven't used raw images before and hoped they would give you better image quality than jpg images.
dng files require psecialised software to open and edit.
Without the...
It's not normal.
If you post recorded flight data from a flight where you've observed this, it might help solve the mystery.
To post your flight data there are a couple of options ...
1. Go to DJI Flight Log Viewer | Phantom Help
Follow the...
There's a huge difference in the cameras.
Go here and select the Mini 4 pro to replace either the far left or right options
https://www.dji.com/products/comparison-consumer-drones