Only for 2D. I compared a still from both versions and the 1080p 3D with some sharpening was a sharp as the 4K from one eye. With both eyes it looked sharper to me.
The 3D version was derived from the 4K DI without filmout acording to AC magazine. I think this 4K DI is more or less finished or could easily be finished if required.
Dune was shot on Arri Alexa LF with a 4.5K Bayer sensor. So there is barely 4K detail there. Then filmed out and rescanned with a final image with probably 3K detail to achieve a film texture and add film artifacts to the image. It looks rather soft for a 4K production. Why no 65mm film? The...