I ordered the ND Lens filter from Viewkopter.com. The actual filter looks like a professional metal Zeikos PL 30mm ND filter. Sadly the mount to the Phantom is rather rough. There's a blob of material (glue? Plastic?) inside the filter housing that prevented one side of it from fitting snugly against the Phantom lens. As a result it goes on the Phantom crooked so one side of the filter is obscuring part of the frame of view and wrecking the video. If it had a decent mount for the Phantom it would be really nice. I might be able to fix it if I took a razor knife to it but I suppose that would probably void any warranty. Anyway I sent them an email on Wednesday and got a message back saying they would have to "check with a supervisor". Then nothing. Today I emailed them again but still no reply. I'm tempted to just call the credit card company and start a charge back based on a defective produce but I guess I should wait a few more days. What do you think? Anybody know anything about these guys?