I can't dissect what other questions you are asking.
But I would avoid "lightning" for reasons it's a tad hard on the equipment and crew.
Recording videos in different resolutions some times with cut or lightning. I use memory card Kingston of 1 GB 10X (R 5MB/seg, W 1.5 MB/Seg) I require another fast card 50X, 133X? That another cause can be? somebody has experience in this subject ?
Optical zoom lens does not work with the video. this happens in other cameras?