VIVITEK HK2288

Things are in flux with 4K at the moment. New 4K projectors at quite startling prices are appearing relatively regularly these days, but as always, not all 4K is the same. The Vivitek HK2288 projector is one of the models that does in fact generate real Ultra High Definition images, achieving this by using a four-megapixel Digital Micromirror Device along with Texas Instruments’ XPR pixel-shifting technology.

EQUIPMENT

Of course, Ultra High Definition actually requires 8.3 megapixels. And for a couple of years there have been projectors around using some form of pixel-shifting technology to, they say, generate Ultra-HD images. But some of these have been based on 1080p technology. To quadruple that resolution you need two things. The first is the ability to shift the pixels slightly to four different positions. That they can do. The other is pixels that are small enough that they will fit into the gaps between the other pixels, rather