Grand Award Winner: Sony VPL-VW1000ES

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This is not a very accurate article. It is true that 4k would give a better quality image, however even a 2K projector can show an image at good quality far in excess of 200''.

52 ft is an average cinema screen width and the overwhelming majority of films these days are scanned in at 2K before being either printed back out to or just shown on a digital projector at 2K.

I glanced over this article for the projector and didn't recognize until like_a_book commented.

This isn't a 4k projector it is a 2k projector

1920 x 1080 is referred to as "1080" usually with a p or i to identify progressive scan or interlaced lines.

4096 x 2160 is a bit more than quadruple the pixel density and would likely be referred to as "2160"

Yes, calling it a 4k projector is a bit misleading for people who don't know better.
I'm not sure most people have a wall big enough for 2k though. Even 1080 is huge for the average home.
Seems like the extra resolution is going to be mostly wasted. I would much prefer a more powerful projector that works well in a bright room.

Interesting, however inaccurate or incomplete assessments. Technically, 4k is 4096 pixels wide; 2k is 2048 pixels wide. 1080 is a standard (usually) used to describe the video "rate". 1080p is "progressive" (60 images per second). 1080i is "interlaced" (60 fields per second). The 1080 number isn't necessarily referring to image resolution (although often used as such in big box stores), but "temporal" resolution. In fact, HD (1920X1080) is not that far off from 2k resolution (2048xWhatever** - **depending on the aspect ratio).

**HD is 16x9 aspect ratio (1920x1080), but movies often have different aspect ratios. That's why you often see your DVDs and BRs sometimes displayed with "letterbox" (black strips on the top and bottom).

It is indeed a 4K projector (see "Digital cinema" on Wikipedia), but there are no 4K movies available so it up-scales from your source, for example a 1080p (1920x1080) Blu-ray. Reviewers say it looks great, but obviously it can't add detail in that doesn't exist in the source. Sony shows 4K content in their demos of this projector, which looks amazing, but it will be (quite) a while before 4K movies are available to consumers. BTW, most people sit far enough away from the screen that they couldn't tell the difference between 1080p and 4K, but those stuck in the front rows of a theater will be able to tell.

@Rapier153: That is not actually correct. 1080p is a term to denote the number of vertical pixels with progressive frame scanning. 2K is a term to denote the number of vertical pixels and is typically used in cinema applications as films have many different aspect ratious, what stays the same is the number of horizontal pixels. What changes with a different aspect ratio is the vertical pixesl (ie the 1080 number).

4K is a cinema reference to a picture that is 4K pixels wide.

I don't know where you get your information, but 2k doesn't refer to vertical (pixel) resolution, but refers to horizontal resolution (2048 pixels) just as 4k refers to the horizontal resolution (4096 pixels). 1080 does refer to the vertical pixel resolution (video scan lines), as I you mention and I poorly attempted to describe. The aspect ratio of 2k and 4k can vary but the horizontal resolution remains at 2048 or 4096 (which can vary slightly, depending the pipeline).