I am just now attempting videoography. For years I have been a still photo bug. I just got the new JVC MG-77 Video system (www.ikelite.com/web_pages/jvc_mg77pkg.html). Going to bust its cherry in Pompano on the 24th. I have a Sea and SEA LX 25. How much artifical light do you need with the video unit? Any advice would be more than appreciated.