Benedict_Arnold said:
...and where 1080p signals actually got DOWNscaled for display. Only thing I can say is "caveat emptor" (buyer beware) and always read the small print.
And this is exactly what’s going on in the projector market at the moment. Very few projectors are genuine, native 4K, and those that are, are normally around the £5,000 price point. Many projectors that sport the 4K or UHD logo may or may not accept a full Ultra HD signal. If it can, it will be downscaled to the native resolution of the chip it uses, and then “upscaled” by showing two images at the same time, one just shifted diagonally by a single pixel, effectively doubling the pixel count. It’s basically another type of upscaling. That’s not to say it doesn’t look good because it does, and it’ll generally look better than a 1080p projector, but you’re not getting the full benefit of genuine 4K.
It infuriates me to see projectors sporting a 4K or UHD logo only to find that it’s native resolution is around half that. I find this misleading, and because of the way information is being presented, it’s hard to find out the truth even if you know hat you’re looking for.
The main people that will fall foul of this are the bargain hunters. They just see “4K” and a price that’s several thousand pounds cheaper than somewhere else and think they’ve got a 4K bargain. More fool them to not seek proper advice. I’ve seen so many online conversation where people think they’ve got 4K projectors, and they haven’t. The industry is causing this, and mainly the manufacturers, because as I say, unless the way in which a particular projector works is explained to retailers, they themselves can be misled into thinking otherwise.
I saw a post on Facebook earlier this year where a retailer was promoting a particular manufacturer’s “4K” projector. It was nowhere near £5,000 so I had my suspicions. Someone piped up that it wasn’t genuine 4K (which is what I’d normally do), but the retailer hit back saying it was because of this that or the other. Further into the argument, they claimed they didn’t know it wasn’t, blaming the manufacturer, which is fair enough, that’s quite possible. But a month or so later, the same ad was running...
What you need to look out for is the NATIVE RESOLUTION of the chip it uses. It needs to be 4096 x 2160. If it is any less than that, it’ll be upscaling the 4K signal it receives, having already downscaled it.