GamColor Plus Green Cine Filters are deep dyed polyester color filters that are a superior color medium for use with all types of light.
Plus Green filters are used on additional lights as fill where this is a predominance of fluorescent light that cannot be minimized, such as in a large venue like a department store or market. These filters reduce or try to eliminate the red and blue elements that these supplemental light sources generate. In this way, once this additional green is added to the venue and the color somewhat stabilized at an even green level, the film can be corrected at the lab where all the green can be evenly removed.
Plus Greens have another benefit as well. In scenes where there are plants in the background, these filters can bring out the green-ness of the plants, making them appear richer and more vibrant.
Finally, in scenes where there are large windows, Plus Greens can eliminate the pinkish effect of the UV (ultraviolet) light characteristic in sunlight.