 The system is capable of delivering up to 14 foot-lambert on unity-gain matte-white screens for 3D (and up to 31 foot-lambert for 2D), a substantial improvement on current generation 3D systems which deliver in the range of 3 to 4 foot-lambert for 3D.The result is improved brightness, color and contrast compared to traditional xenon projectors.The first theaters temporarily used off-the-shelf dual Christie 4K laser projectors until the Dolby Vision-capable ones were shipped out in spring 2015.