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The 1440 pixel vertical resolution is double the vertical resolution of 720p, and one-third (about 33.3%) more than 1080p. QHD ( Quad HD ) or WQHD ( Wide Quad HD ) is the designation for a commonly used display resolution of 2560 × 1440 pixels in a 16:9 aspect ratio .
The vertical resolution is usually a multiple of 8 or 16 pixels due to most video codecs processing pixels on such sized blocks. A widescreen FHD video can be 1920 × 800 for a 12∶5 ratio or 1920 × 1040 for roughly 1.85 × 1 , for instance.
The 64:27 aspect ratio is the logical extension of the existing video aspect ratios 4:3 and 16:9. It is the third power of 4:3, whereas 16:9 of widescreen HDTV is 4:3 squared. This allows electronic scalers and optical anamorphic lenses to use an easily implementable 4:3 (1.3 3) scaling factor.
The 1280 × 1024 resolution is not the standard 4:3 aspect ratio, instead it is a 5:4 aspect ratio (1.25:1 instead of 1. 3:1). A standard 4:3 monitor using this resolution will have rectangular rather than square pixels, meaning that unless the software compensates for this the picture will be distorted, causing circles to appear elliptical.
The following is a comparison of high-definition smartphone displays, containing information about their specific screen technology, resolution, size and pixel density.It is divided into three categories, containing smartphones with 720p, 1080p and 1440p displays.
The base resolution increased by increasing the width and keeping the height constant, for square or near-square pixels on a widescreen display, usually with an aspect ratio of either 16:9 (adding an extra 1/3rd width vs a standard 4:3 display) or 16:10 (adding an extra 1/5th).
16:10 (1.6:1), also known as the equivalent 8:5, is an aspect ratio commonly used for computer displays and tablet computers. It is equal to 8/5, close to the golden ratio ( φ {\displaystyle \varphi } ), which is approximately 1.618.
For viewing documents in A4 paper size (which has a 1.41:1 aspect ratio), whether in portrait mode or two side-by-side in landscape mode, 4:3, 2:3 or 16:10 fit best. For photographs in the standard 135 film and print size (with a 3:2 aspect ratio), 2:3 or 16:10 fit best; for photographs taken with older consumer-level digital cameras, 4:3 fits ...
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