@williamjamesfpv Certainly. The first one I tried was by
Snake River Prototyping, a combo ND8 and polarizer. Build quality was good, but since it was made to slip over the camera, it could be quite difficult to remove from the camera. Also needed a counter-balance (not included) or it would overwork the gimbal motor. The ND8 was a good versatile strength, but not ideal for super bright settings, or for dusk when the sky is pretty, but not as bright. Also, the polarizer would look too strong in certain angles and , but you couldn't remove it if you still needed the ND part. It was one of the first available though, so it had that going for it.
After that, I bought the
PolarPro 3 filter set, before they had a 6 filter option. It had an ND4, ND8, and polarizer. I liked that you could easily screw them on and off, and that they were light enough to not need counter-balancing, but again, versatility was quite limited. You could only use one at a time. They added some extra combos for the
6 filter set, but very expensive for the limited versatility.
What excites me about
@Rainbowers set, besides the fact that he's a community member turning out an exceptional product, is that he clearly knows photography and optics. Coming from a background in cinematography, I love the matte box workflow, allowing me to stack the right combo of filters for my setting. Super bright sky and shooting landscapes? Give me an ND16 or 32 and a ND4 Grad on top. Maybe a polarizer if needed. But maybe not. I'm not stuck needing both an ND16 and an ND16 polarizer filter. Is it dusk, with a gorgeous sky but a valley in the foreground? Just lose the full ND and put the ND grad or stack the 2 grads to knock down the sky but keep the data in the valley in range. It will make color grading so much easier. The sensor on the P3P camera, as good as it is, is still pretty limited compared to large sensor DSLR's, so any help you can give it on the dynamic range is going to greatly improve your images.
I do wish counterbalancing weren't necessary, but that's really more an aesthetic issue than anything else, and it's a small price to pay for getting the tools to do it right.