[Jaboney]

This is a recurrent problem. Just shooting some video and *POP* what appears to be a flash shows up upon review. Seen it before and thought maybe it was from another camera. This time, I am certain there were no other photographers around. Any ideas?

Shot with a K7.

[YT]http://www.youtube.com/watch?v=HfPRW41iQmo[/YT]

[jogiba]

I have seen that same problem, you could see two flashes early in the first 20 seconds of this video.
[yt]http://www.youtube.com/watch?v=WsGRv6IBkiQ[/yt]

Another interesting effect appears when you change the framing quickly from a dark scene to a brighter one. The camera first adjusts the gain to adapt to the new lighting conditions and then changes the aperture. When that happens the gain is then not decreased sufficiently quickly which results in a flash-like split-second of extreme over-exposure. When the aperture changes there's also an audible click sound recorded. We've seen this effect on other DSLRs before but to a lesser extent. This problem can be avoided by fixing the aperture before starting to record.

http://www.dpreview.com/reviews/pentaxk7/page21.asp