Here's a very quick look at the new Rokinon 10mm F/2.8 Prime Lens for Micro Four Thirds cameras. This lens mounts directly to MFT cameras such as the GH3/GH4/ or BlackMagic Pocket Cinema Camera.
I was looking for a lens that could offer a wider field of view over my 12-35mm F/2.8, but after receiving the lens I was a bit disappointed. The size of the lens and lack of front filter threads made it harder to work with than my existing lenses.
Considering it lacks image stabilization and is priced at over $520 dollars, if you're looking for a good Rokinon MFT Prime Lens for video I think the better choice would be with the Rokinon 12mm F/2.0 for $399.