----- Original Message ----- From: "Doug Franklin" Subject: Re: White Balance Problem
> wendy beard wrote: > >> With the faster shutter speed you are seeing the change between >> different banks of lights - hence the apparent split lighting on each >> frame. > > If I understand the way the fluorescent lights work, that shouldn't > happen. They should all be "blinking" at the same frequency, that of > the provided 50/60Hz input power. But it's quite possible I don't > really understand that stuff, either. :-) Again, if my understanding is > correct, what you're actually seeing is that you're catching all of the > banks of fluorescents at the same point in their cycle, which changes > their relationship to the rest of the light sources in the scene. I could be wrong, but I suspect that if the ballasts aren't perfectly matched which they wouldn't be after 10 minutes of use, even if they started out that way, there could easily be banks of lights that are out of sync with each other. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
