Large, diffuse light, usually with electronic flash as the light source. Over cast days produce very soft lighting with little contrast compared with a bright sunlit day which will produce harsh shadows and strong highlights. The use of a softbox is to soften to light, make it less harsh. Softer lighting produced much more pleasing photos when shoo... Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl