3. The Video Lights
Photographers use flashes since they take a single shot which is often a small
fraction of a second. Video is a different technology - our cameras take 60 pictures every second. So videographers need continuous light. Without additional lighting, video cameras are dependent on whatever light is available. As items loss their lighting, the brightness of the colors fade. When a room is dimly lit as often is the case at receptions, without supplemental lighting, the objects will turn gray or perhaps black or not viewable at all. In fact, if you know of someone who has tried to take video using their phone in a dimly lit room with the small LED light, you may notice that objects more than a couple feet away turn gray and black. For most receptions - even if the venue supplies some light and DJ uses lights, it is extremely difficult to see any action at all without supplemental lighting. The tradeoff though, is that to improve the lighting of the subject, requires illumination which can be distracting and perhaps even disturbing to guests. So there is the constant 'tradeoff' which a videographer must make which is how to get enough light without overly impacting the subjects they are trying to capture. You have hired a videographer to capture your wedding and the reception can not be filmed without some amount of supplemental lighting. We do what we can to keep the lighting as low as possible and I often move as far away as I can and then zoom in to minimize the impact of the lighting. Also the lighting could be construed as disturbing the ambiance of the reception and that is why we don't record very long segments at a time (except for specific events like first dances, toasts, cake cutting, etc.) – we want to get the lights on, take the video quickly (often no more than about 30 to 40 seconds) and the light goes off. A 3 or 4 hour reception often has no more about 30 minutes of video for dancing (that's only about 15% of the time on).
Aside from the reception, the lighting criteria are different. we may try to use it before the ceremony, but if the rooms are well lit, we can turn them off. WeI rarely use lights at the ceremony - they disrupt the ceremony. The only exceptions would an extremely dimly lit hall with colored venue lighting (like getting married under a purple arch), an outdoor ceremony at night, or for wedding couples with darker skin tones which would