You can try through the day at something a good distance away, I've got a hill over 2 km away that I can check focus as well as fov when I have my reducer on or off. You might not be able to travel far enough in with the dslr, trial and error. There will be a difference from the sensor on between both of your cameras, you have to a count for that.
I can tell in pic 3 you put a lot of sharpening into it, I've done that to a couple of pics lol
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