Update: Projection Screens
The combination of the wide angle of dispersion and the screen becoming 'invisible' in the image gave us something we hadn't expected, a serious improvement in the adjacent area contrast of the image. There was essentially no visibility of hot spotting. Every area of the picture looked better in contrast. Since there were no surface elements of the screen scattering light to adjacent areas of the screen, local transitions in the picture had a better contrast. Taken together, the image looks as if it has a seriously better contrast. None of this could be measured or specified in the normal on-off contrast measurements provided by projector manufacturers.
All of this together produced a significant surprise in understanding the real capability of the projector. Prior to this screen, we never actually knew what the projector was capable of doing.
The improvement is so significant, Da-Lite has created a completely new category, called the Affinity Screen series, to describe what we've accomplished. There will be several screens in the Affinity product line. As we know, there is a need for gray screens as well as white screens. The idea behind moving in this direction came from professional broadcast requirements where projection systems are used in post production. For this reason individual screens in the Affinity series are being called HD Professional. A number, such as .6 or .9 or 1.1, will follow in the series. The number will describe the level of gray in each screen. We need to be careful that these numbers not be confused with gain numbers being used by other manufacturers, but more on that in a minute.
In asking for these screens, we realized that increasing the angle of reflectivity would require tighter control of the viewing environment, but saw this was easily accomplished in a professional viewing environment. When we experienced the actual improvement in image quality, we decided the Affinity screen should be made available to consumers as well as to the professional market. Besides, it supported our position in the industry that if you get things right you'll see the best image quality you could get from the system. The bottom line in image quality is that you won't get good quality by making a lot of compromises.