What's a 4K beamer?
4 times sharper than Full HD
The 4K resolution is 4 times sharper than Full HD, so you see details better. This is because a 4K beamer projects a resolution of 3,840 x 2,160 pixels. Together, these are more than 8 million pixels. The Full HD resolution consists of 1,920 x 1,080 pixels, which amounts to a total of about 2 million pixels. If you want to view 4K images, both the projector and the playback source must support this resolution. Think of a 4K Blu-ray player.
Difference between native 4K and pixel shift
If a beamer displays 3.840 x 2.160 pixels, we speak of a native 4K beamer. Currently, as a private individual, you mainly have the choice of beamers with pixel shift. These beamers support a lower resolution, but simulate the 4K picture quality. A built-in 4K chip ensures that the pixels move quickly back and forth. In this way it seems like you see more pixels. This makes the image sharper but not as sharp as a native 4K image.