As Michael pointed out earlier, ND filters help by stopping down the lens a couple stops and changing the exposure. This is basically equivalent to shooting in lower light. This doesn't come without a cost as it will also soften the image a bit, as some have reported in the Phantom thread. Also, as reported, you really need something closer than 300-400 feet away in order to really see the jello. Finally, what I'm finding is that the H3B's 2.7k/30p mode is an order of magnitude harder to remove the jello than the 1080/60p mode.
Our testing continues, but even with three layers of isolation on my F330 setup, there's still a bit of jello in the video below, which was shot in the afternoon yesterday, with a bright sun still out.
Right now I have the motors isolated, and then two layers of isolation at the mount, rubber grommets and then four of the same silicon isolators that we use on the gimbal IMS. Andrey, on the other hand, has been able to get similar performance (no jello in lower light conditions...) on his Phantom test setup with just the silicon isolators. I think the reasons are twofold. In his setup, the isolators are spread out, basically at the attachment points for the landing gear. This really improves the effectiveness of the dampening. I believe the second reason is because the Phantom is similarly sized, it is running on 3s while my F330 setup is 4s. This means the blades are spinning a bit slower, so less vibrations are generated.
Today I should receive a new F330 LG set, with IMS, that is pretty much a scaled down version of the F550 LG/IMS. This will spread out the isolation, which should be enough of an improvement, I hope, to eliminate the "bright sunny day" jello I have left. If not, I will add another layer of isolation. Once we get the jello under control, we'll add a tilt-only gimbal, which Andrey is finishing up. Mercalli does a great job handling the roll compensation, but doesn't do much in the tilt axis.
I should also receive Andrey's latest Phantom mount, so I will start trying to optimize the performance of the H3B/2.7k setup on the Phantom as well. We are really pretty close.
Also in today's shipment are the new tube-based AG600 baseplates. Once I get them and update the instructions, etc., I will re-enable everything on the website. All AG600s from this point forward will have the updated baseplate, which makes it easier to balance the camera on the gimbal, and I will offer these as a separate upgrade for existing users, for those who want it.
I'm now satisfied that the Shrimp isolated motor mounts offer enough of an improvement that we are going to make this a standard part of the Shrimp kits. I have updated all the sets I have here, and I will make an upgrade kit available for existing users.