a dual camera system uses a single lens and no moving parts in the optical path . a single lens directs a desired scene to a partially reflective beamsplitting mirror , thence to a pair of image sensors . for day / night operation , one sensor may be optimized for nighttime sensitivity , while the other is optimized for daytime operation . alternatively , one optical path may have greater magnification , thus allowing electronic zooming with no resolution loss . the system may be enhanced with an image intensifier for nighttime operation ; digital sensors for improved resolution , or orthogonal gyroscopic accelerometers for image stabilization . additionally , the monochrome and color images may be produced simultaneously and ‘ fused ’ algorithmically , yielding an improvement in sensitivity and color resolution compared with a conventional color camera .