+1 on Neat Video. The shot you shared should get good results. The trial shows you a result within a box if memory serves. So after doing a test, you will need to purchase it in the end. But it is worth it for the price. Note that it increases render times quite a bit. I have found it to be more effective with render times in Resolve over Premiere.
I have a Canon EOSR which uses a similar sensor to the 5DMK III from what I have read. Best to keep it at 400 iso in my experience. I tend to lean to higher exposure when looking at the histogram as brightening or bringing up the shadows in post tends to make it noisy. It is 8 bit color. Not a lot of room to play with. But I can get some pretty nice results if I follow those guidelines in my experience.
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