which technical canvas?

Which technical canvas? here are some tips for choosing well

Is it necessary to call him back? Movie theaters are windowless rooms with white screens specifically designed to reflect the image of the projector. The ideal is to recreate at home, or in its meeting room, the closest possible conditions to optimize the image of your projector: shut shutters and curtains, and choose a real matte white matte film quality that will give you very beautiful colors in projection.

When these basic tips can not be respected, different technical projection screen canvas have been developed for decades to counterbalance a bad installation. These are the “technical” paintings. These canvases are no longer white but are available in different tones ranging from matt gray to shiny gray (silver), which allows to shift the colorimetry to more contrast in projection, thus projecting a less bland image into a room that is too full. clarity. https://www.design-screen.com/en/resources/

But know that if the colors appear so darker, the whites will be as well: a white shirt of an actor, white images (clouds, foam of the sea, documents word or excel in office automation) will also appear grayer. In addition, a technical canvas reduces the viewing angle of viewers: it will therefore place your projector and spectators perfectly in the axis of these technical paintings. To choose a technical canvas, you will find an index called “gain”. This index measures the amount of light returned by the technical canvas compared to the original brightness of your projector.

A gray technical sheet with 0.6 gain will add more contrast and more gray by restoring only 60% of the brightness of the projector: the image being less white, it will appear more contrasted. On the contrary, a shiny silver silver 1.3 gain technical cloth will add + 30% brilliance: the image will therefore also be contrasted (thanks to the silver color of the canvas) but will be brighter (like a digital TV image). In both cases, the viewing angle is reduced and we must place projector and spectators in the axis of the canvas (beware of spectators sitting too far right or too much left of the screen).

In summary, always prefer to project your sessions in the most relative black possible with a real quality white cinema canvas: even with clear walls and a white ceiling you will have very good results. Technical webs will be a means of improving poor conditions, but it is better to prepare upstream for good conditions than to act downstream on corrective technical solutions … Have happy projections!