Hi in my opinion (as a colourist) it would be the easiest way to convert it properly into a known grading working colourspace-this way it doesn't matter too much which camera type is the source as long as you convert correctly. All grading...
Davinci Resolve does have a very steep learning curve and the available tutorials can be irritating and confusing, but it is still the only pro-grade (and free) editing suite I have gone back to time and again because it is worth all the long...
What it offers is the opposite of a few clicks, it's more flexibility than standard... but at the cost of knowing what you want to achieve and how to do so. Gotta learn and spend the time.
By far, the simplest way to see the Lut in action is to use the DJI Fly app or LightCut. If you choose one step edit, you still need to go into 'Edit more', then filter, color recovery and choose D-LOG M. This will apply the DJI Lut.
In...