Thought I posted this but, apparently, I didn't. Anyway, was flying the other day. Working on my video and I noticed--at times--my horizon is tilted. Not all of the time, just every so often. I had noticed this with some stills but just didn't think anything of it. Here's an example video of what I'm talking about. For this video, I corrected for the lens distortion and leveled the horizon in Photoshop and exported from iMovie. http://youtu.be/q6hrDIlTXpQ Thanks.