I noticed this from the moment I got the camera but never bother to question it since I thought it was normal. Sometime I see these streaking lines on the LCD especially at night, but they never appear on the pictures on video, I think it's just LCD screen. Is this a defect? I cannot see them during daylight but they do show up if I have dark background. I wish I had taken a pic of it. The lines are not black, they have some kind of purple and greenish streaking lines.