If we take a look at the market we are offered multiple types of projectors in different size and shape, but what do projectors need to be useful for us? You have from where to take, the first projector is the most used one made of LCD, there is also the DPL and the LCoS. LCD projectors stand out for the naturalness of the colors, and for offering a very good brightness with color images, more demanding than when we measure the brightness level of white. DLP technology has among its assets the level of contrast, overall brightness, sharpness and the generation of very bright images, which makes them a candidate to consider in rooms with ambient light. Finally, LCoS projectors, which on the one hand try to combine the advantages of LCD and DLP technologies and on the other hand, minimize their shortcomings. In fact, they usually offer very good contrast, deep blacks, good detail in dark areas, and, interestingly for moviegoers, the pixel array is barely visible.