The need for high quality cinema screenings is the introduction of standards for projecting videos of the highest quality. Illuminance of a movie screen depends on a combination of different factors. With development of digital projectors and the amount of energy spent for the projection of light, difference of luminescence specter for 2D and 3D ethnic, distance between the projector and screen and the shape and the screen type, all influence the level of light that is reflected back to the audience. Every time the image on the screen changes, quantity of light emitted changes. Continued change in the light intensity can result in eyestrain, drying of the eye balls, headache or even loss of consciousness. There for, light intensity that falls into the eye in a dark room such as a movie theater, can damage the eyesight or cause a short-term deterioration of long-term interference. To prevent that and prolong the impeccable quality and uninterrupted long-term viewing of a movie projection, the system must be calibrated and checked regularly. The agreed standard for 2D projection is 14fL (respectively 48 cd/m2) and three times less for 3D technique. The value varies due to the projection technique, canvas and lamp life. Regular servicing that includes measurement controls the amount of light on the screen, in order to maintain standards over a longer period.