Comment on 4k is not 2160p - heard it here first!

• Strangle@lemmy.world ⁨1⁩ ⁨year⁩ ago

  It’s pretty confusing

  “If you think 4K and UHD are one and the same, I don’t blame you. I blame the companies that LOVE to use them interchangeably all the time. You pick up a Blu-Ray movie disc of a 4K movie and you will most definitely see an Ultra HD label on it. 4K is actually not a consumer display and broadcast standard but UHD is. 4K displays are used in professional production and digital cinemas and feature 4096 x 2160 pixels”

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  • SaltySalamander@kbin.social ⁨1⁩ ⁨year⁩ ago

    UHD features a 16:9 aspect ratio and is twice the resolution of full HD

    Heh, no. 4k is exactly four times the resolution of 1080p.

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    • Strangle@lemmy.world ⁨1⁩ ⁨year⁩ ago

      1920 x 2 = 3840 (4K UHD)

      That’s what he’s talking about.

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      • newthrowaway20@lemmy.world ⁨1⁩ ⁨year⁩ ago

        Yeah but that would only be an increase in the horizontal resolution… you’d have 3840 x 1080.

        So you gotta double the verticall resolution too, which means you’ve now doubled both horizontal and vertical resolutions, which is equal to 4 times the initial resolution

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    • WestwardWinds@lemmy.world ⁨1⁩ ⁨year⁩ ago

      It is double the resolution, because resolution is expressed as an x,y pair. It is 4 times the pixel density for the same screen size.

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      • ricdeh@lemmy.world ⁨1⁩ ⁨year⁩ ago

        Actually, display resolution refers to exactly what you call pixel density, and NOT the pixel dimensions. This error is so common that the term resolution has practically been redefined outside of the professional (science and engineering) space, but technically, display resolution and pixel density are the same thing.

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  • IWantToFuckSpez@kbin.social ⁨1⁩ ⁨year⁩ ago

    UHD is 4x Full HD resolution. The person who wrote that can’t even do math. That’s like saying 4^2 = 2 x 1^2 because 2 x 1 x 1 = 2 x 2

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    • Strangle@lemmy.world ⁨1⁩ ⁨year⁩ ago

      It’s obviously talking about horizontal lines, not pixels

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      • IWantToFuckSpez@kbin.social ⁨1⁩ ⁨year⁩ ago

        No they specifically say

        UHD features a 16:9 aspect ratio and is twice the resolution of full HD.

        According to Wikipedia resolution is:

        The display resolution or display modes of a digital television, computer monitor or display device is the number of distinct pixels in each dimension that can be displayed

        https://en.wikipedia.org/wiki/Display_resolution

        Resolution is the number of pixels in both dimensions, so they are wrong

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      • snooggums@kbin.social ⁨1⁩ ⁨year⁩ ago

        How is it obvious that they are talking about horizontal when they also include vertical in the same calculation?

        They just don't know the difference between pixels and lines.

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  • jordanlund@lemmy.one ⁨1⁩ ⁨year⁩ ago

    I don’t know that it’s THAT confusing, since by definition we’re talking consumer grade products, not professional grade.

    Amd that’s a distinction consumers have been making for years.

    caranddriver.com/…/2022-hyundai-santa-cruz-pickup…

    I mean, yeah, technically it’s classified as a pickup truck… but nobody will ever confuse it for:

    www.kbb.com/ford/f250/

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• MortyMcFry@aussie.zone ⁨1⁩ ⁨year⁩ ago

  I thought the term “basic” would hint the sarcasm but I failed.

  It really isn’t that hard to grasp, unless you are trying to frame your article a certain way.

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