Uplighting, is the best choice. With enough power, this style of light can render the foot-candles necessary to create a better picture. However, the drawback is that the light is so uniform, that it winds up hurting the contrast and creates a two dimensional looking image instead of a three-dimensional image. A Special Note Regarding Track Lighting Track lighting, although excellent for enhancing the effect of good lighting, has several problems, when used as the main source. The small bright cans create light that is too hard.
Shadows are sharp and prominent, especially on the walls or white-board behind a participant.
Bright track lighting is uncomfortable to look at, and will cause some people to squint. Color temperature does not affect the brightness of the light. Optimum color temperature of light varies between each camera or video system. The majority of video systems will perform best using 3200k. In an effort to alleviate some of he problems mentioned above, specialized lighting systems have been developed especially for videocon-ferencing needs.