Gradient filters are easy to apply in post. You can get them exactly the way the scene requires. Some parts of footage may not need them at all so they can be selectively applied.
But filtering digitally after the fact isn't actually doing the same thing. One of them is doing math on sampled data. The other is actually changing what is sampled in the first place. Filtering in analog is better - if you can do it - for a whole host of reasons, not the least of which is that you can get even more detail in the shadows by exposing to the right than you would if you didn't have the analog filter on in the first place. In essence, you're expanding your dynamic range with the analog filter. The problem with a drone, of course, is that you can't take the filter off once you've got the thing in the air, which makes the process a lot more difficult. Additionally, if you shoot any kind of stitched images, you run into problems because you've got an uneven exposure across the frame. All that to say, I wouldn't use graduated filters on a drone for practical reasons, but they are absolutely a good idea to use for landscape photography if you're in a situation that benefits from it.
The dynamic range from the
mavic 2 pro is quite impressive...
Last night's sunset with the shadows pushed about +3 EV:
The DR is impressive for a 1" sensor (and certainly for a small drone), but it's not anywhere close to a modern ILC/SLR. But it flies, which can make all the difference.
Very interested in how other landscape photographers are setting up and using the photography options available? I'm thinking my go-to would be f/6 to 9, iso 100, and changing shutter for exposure. Also bracketing for any scenes with a larger dynamic range.
The real limitation on the bracketing for the
M2P is the 0.7 EV interval it uses. In the end, that means you're only really buying yourself an additional 3 stops or so of exposure latitude, which isn't worthless, but can be more trouble than it's worth. That said, I typically use bracketing because it gives me a better chance of getting a "perfectly" exposed to the right image. Just beware, though, that you shouldn't expect to do some wide 5 EV brackets and then merge in HDR. So far I've found (post-processed) HDR on the Mavic images to be ... not really much better than the best single-layer exposure.
My typical setup is to shoot 6 images using the 5 AEB bracket: 2 rows of 3. I typically stitch in Lightroom (PTGui if that doesn't work), and typically use either an Equirectangular or Transverse Mercator projection (depending on what I'm wanting to do). That said, the above shot was taken with the standard 180 degree panorama mode on the drone with DNGs, then stitched (21 images) in Lightroom after the fact. I wish the whole exposure had been +0.7 EV brighter, but... needs must.
As for settings, base ISO all day long, f5.6, usually, and 5 AEB bracket always. Change the shutter to expose to the right as much as possible, since DR is actually an issue compared to most "real" cameras. You can get great results, but it's a lot less forgiving.