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4K Resolution
Sony launched the world's first commercially available 4K projectors. That
raises some obvious questions. What is 4K? What signal sources support it?
For what applications is 4K suited? And how do you get a 4K signal into the
projectors?
In the metric system, "K" is short for kilo, the prefix for 1000. But in the
binary system of computers, "K" equals 2 to the tenth power, or 1024. In the
jargon of digital cinema, "4K" refers to an image that's 4 x 1024, or 4096 pixels
wide. Sony 4K projectors achieve a resolution of 4096 pixels horizontal x 2160
pixels vertical. This is slightly more than four times the pixels of the highest high
definition TV specification (1920 x 1080). You can think of 4K as delivering four
times the pixels per square inch. For example, if you held a credit card up to a
screen 27 feet wide, the card would be covered by over 1,000 pixels. And each
pixel would be the size of the letter "E" in the word LIBERTY on a US quarter.
Greater immersion
Just as high definition is more involving than standard definition, 4K is far
more immersive than HD. 4K projection enables you to sit close to the screen
and still retain the illusion of a seamless, continuous picture. As you sit closer,
you become more immersed in the visual experience.
4K Projection
4096 H x 2160 V
8,847,360 pixels
1080p Home
HDTV
1920 H x 1080 V
2,073,600 pixels
SXGA
1280 H x 1024 V
1,310,720 pixels
Home SDTV
720 H x 480 V
345,600 pixels
More pixels make for a far larger, far more immersive viewing experience
and provide space for more visual information.