Back in May after the Clean HDMI update came out, I used mine as a third cam with my P2 VariCam and after some experimenting with the settings, I got a completely clean out and was able to feed it into my portable P2 deck (through a BlackMagic HDMI-to-SDI) box. For some reason audio didn't pass(didn't really matter, it was just an alternate angle), but the video was fine. I was one of the first to receive a smallHD DP7PRO back at the beginning of July and its been awesome(even with a few small bugs they're working out), but I updated the firmware last week and when using it with HDMI on my C300, it can't detect an HDMI signal by itself(you can hook up via SDI and HDMI and it will somehow lock onto the HDMI signal and after a few cycles of connecting and unhooking the SDI, it will stay locked onto the HDMI signal). I have reported it to them, but I don't know if this is a widespread firmware issue or a problem with my particular unit. The only other shooter I know with one hasn't tried it out with HDMI since the update. HDMI worked fine with my C300 before the firmware update and I don't know how much of the firmware the AC7 and DP7 share.