[Engadget]

Why are folks so keyed up about 4K? At first glance, that’s the type of question that answers itself: by definition, a 4096-pixel wide image delivers around four times the resolution of 1920 x 1080, and that’s a healthy multiple. It’s actually of a broadly similar magnitude to the difference between 1080p and old-fashioned analog NTSC video, and nobody these days questions the value of that upgrade. On the other hand, there must come a point where pixels cease to be visible in a home theater environment, such that buying more of them at inflated prices stops being worth it. Sure, 4K can be a big help with 3D footage, because it boosts the resolution to each eye — something we experienced with the REDray projector. But what about regular 2D material, which is still very much the default viewing option? That question’s been nagging at us, so when Sony invited us back for a second look at its 4K projector, the VPL-VW1000ES, this time with full-throttle native 4K source material rather than just upscaled 1080p, we turned up with a tape measure. Read on for what came next. …

Nevertheless, we have the beginnings of an answer to our original question: if your screen is around three or four meters wide, and if you sit less than six meters away from it, you’ll notice a clear benefit in switching from 1080p to 4K for 2D material. Interestingly, you’ll also see a significant impact from upscaling your footage through the Sony projector’s processing engine — which makes ‘Reality Creation’ one of the stars of this show, not least because 4K content is so hard to find. …

See the full story here: http://www.engadget.com/2012/05/17/sony-vpl-vw1000es-projector-native-4k/