Interesting, Raptorman. I'll have to test it more myself, but at the end of the day, you have to be very careful with LOG curves on an 8-bit recording like h.265/h.264. Basically, it's a tool -- you want to use it when you need to preserve more highlight and shadow detail simultaneously than you can with in a non-log profile. But if the dynamic range of your scene fits just fine in dcinelike or none, then stick with that, you won't have to stretch the contrast in post as much and should see less banding.
Incidentally, I did some dlog shooting at dusk a few days ago and noticed that, compared to None/dcinelike, the DJI Go app reports the same exact exposure as 2 stops brighter in DLOG now. In other words, if left in its default auto exposure mode, the
P4P will underexpose DLOG by 2 stops (presumably to preserve more highlight detail) and lift the shadows so they still look normally exposed (or even brighter than they might in none/dcinelike).
That's exactly what you want DLOG to be doing if your goal is to preserve the largest possible dynamic range. Unfortunately, it also can produce very noisy shadow areas, which is exactly what happened to the footage I shot. But it also suggests that the base ISO when shooting SLOG isn't really ISO 100, it's more like ISO 400 (in other words, ISO 100 in DLOG is as noisy as ISO 400 normally).
I've uploaded an unedited sample clip to youtube to show what I mean. This was shot at ISO 100, 1/60, F5.6 just before sunset. h.264. Check out the noise/mushiness in the trees.
My thinking is that--just with SLOG on the Sony cameras--DLOG on the
P4P should only really be used if you have enough light to shoot at base ISO (in this case ISO 100). If you have to shoot at higher ISOs, DLOG footage is going to come out very noisy.
Some of the DLOG shots I took later where I was forced to bump up the ISO to 400 to compensate for the falling light definitely look much noisier then I expected ISO 400 footage to look. Here's an example: