I assume that the HD watermark is left by the compression software or codec used, and not left by the creator intentionally. HD is cool, but with a bitrate that high and little post-processing, it looks very jittery and VERY home video. 50 fps is very smooth, but not very film like. I'd like 24/25 fps progressive, and lots more work with the post processing, making it look more film like, as it is possible, especially with a camera of that level. I wouldn't mind a HD camera though...