Some of the photos in the gallery on their website have EXIF - umm when they are holding the lights close to them the shooters are using f/6.3 and 1/30th at ISO 640. It's an assumption but you'd think they'd have it at the brightest setting if they were shooting stills at 1/30? This probably isn't going to be enough light for most of what I am doing except light painting, but I'd love to be proven wrong! Simon tell us how you like them!