1. An apparatus, comprising: a light source configured to illuminate a target scene; an image processor and an adjustable light filter coupled with said light source, said adjustable light filter adapted to display on a target scene a filter image as a grey-scale image, said filter image created to spatially filter light originating from said light source based at least in part on at least one parameter processed by the image processor to generate an input filter signal to the adjustable light filter to provide the grey-scale image, wherein brightness of each pixel of the grey-scale image is inversely proportional to a local brightness of a pre-flash image of the target scene.