This is exactly the point that I am trying to make. If all this talk about over-saturated primaries dissuades a potential buyer from even demoing the RS1, then they have been done a disservice. They may very well be steered by all this talk into purchasing another PJ which is actually inferior overall to the RS1. That other PJ will very likely suffer from the same problem of inacurate primaries, too.For those that don't really understand exactly what the more technical posters here are talking about:
The problem is not with the RS1's (or most other displays') color decoding. The problem is that the native colors that the RS1 uses for Red, Green, and Blue (the primaries from which all other colors are generated) are over-saturated (they are too
Red, Green, and Blue) compared to the standards for both HD and SD.
The whole video system is based on conveying images by capturing, coding, and displaying how much Red, Green and Blue is in each pixel of the video image. This roughly corresponds to the three types of color sensors in the human eye, one sensor (called a "cone") each for wavelengths near Red, Green and Blue. Our whole video system is based on how the human eye functions.
A display can only directly make three individual colors of light, R,G, and B. Your brain interprets different mixtures of RGB to be all the billions of colors that you see on screen. The video standards define exactly what colors are to be used for Red, Green, Blue, and White (a very specific mixture of RGB) from camera thru processing all the way to the display. If these standards are followed, you will see exactly what color the director intended on your display.
When parts of an image are coded to display saturated colors, those parts will appear more saturated on the RS1 than the director intended. Just how much of a problem this is depends on just how oversaturated the primaries are and whether or not you can even tell by looking at the image that this is happening.
For example, some plasma TVs show grass as being neon green. This is an obvious clue that the color is off. The Sharp 10K PJ had aseverelyy over-saturated Red that caused obviousinacuraciess in images. However, if the primaries are only mildly off, there will be few/no clues to the fact.
I'm not advocating that displays be improperly designed with inacurate primaries. I think it is ridiculous that this is being done. However, there are a myriad number of things that affect overall PQ, and this is only one. Just put it in perspective.
Originally Posted by cpc
Fair enough. I was just wondering if the JVC really had a specific issue that was noticable and unique vs what other projectors do. As I understand it, most projectors aren't doing amazingly good colour decoding, but they don't have specific problems of over saturation other than being in-accurate and the issues with green etc. With all this talk of "over-saturation" it sounded like the JVC's colour had unique characteristics that justify the above label. From what I'm hearing it's not bad enough for most people to be a deal breaker. Perhaps if it wasn't mentioned, then maybe most people wouldn't know about "it" or be concerned. I hope to check an RS1 out some time soon and I will see for myself.