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2. 21:9 aspect ratio - Wikipedia

   en.wikipedia.org/wiki/21:9_aspect_ratio

   Wide screen projectors with a 16:9 aspect ratio can be converted to 21:9 by attaching a 4/3 horizontal stretch or vertical squeeze anamorphic lens. This will optically scale standard projection images with e.g. 1920×1080 (FullHD) or 3840×2160 (UHD) to a 21:9 aspect ratio.

3. 4K resolution - Wikipedia

   en.wikipedia.org/wiki/4K_resolution

   Sony was offering 4K projectors as early as 2004. [81] The first 4K home theater projector was released by Sony in 2012. [82] Despite this, there's not many finished films with 4K resolution as of 2023. Even for movies and TV shows shot using 6K or 8K cameras, almost all finished films are edited in HD resolution and enlarged to fit a 4K format ...

4. Display resolution standards - Wikipedia

   en.wikipedia.org/wiki/Display_resolution_standards

   FHD (Full HD) is the resolution 1920 × 1080 used by the 1080p and 1080i HDTV video formats. It has a 16:9 aspect ratio and 2,073,600 total pixels, i.e. very close to 2 megapixels, and is exactly 50% larger than 720p HD (1280 × 720) in each dimension for a total of 2.25 times as many pixels.

5. 16:9 aspect ratio - Wikipedia

   en.wikipedia.org/wiki/16:9_aspect_ratio

   While 16:9 (1.7 7:1) was initially selected as a compromise format, the subsequent popularity of HD broadcast has solidified 16:9 as perhaps the most common video aspect ratio in use. [7] Most 4:3 (1.3 3 :1) and 21:9 video is now recorded using a " shoot and protect " technique that keeps the main action within a 16:9 (1.7 7 :1) inner rectangle ...

6. 1080p - Wikipedia

   en.wikipedia.org/wiki/1080p

   1080p (1920 × 1080 progressively displayed pixels; also known as Full HD or FHD, and BT.709) is a set of HDTV high-definition video modes characterized by 1,920 pixels displayed across the screen horizontally and 1,080 pixels down the screen vertically; [1] the p stands for progressive scan, i.e. non-interlaced.

7. LCD projector - Wikipedia

   en.wikipedia.org/wiki/LCD_projector

   In 2014, 60-inch 1080p flat panel televisions were less costly than a projector with 1080p native resolution. Projection systems were typically marketed as offering a diagonal image size of 100 to 300 inches.