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You are misunderstanding. 1080p, 1440p, 2160p refer to the number of rows of pixels, and those terms come from broadcast television and computing (the p is pro
by mkl 2y ago
You are misunderstanding. 1080p, 1440p, 2160p refer to the number of rows of pixels, and those terms come from broadcast television and computing (the p is progressive, vs i for interlaced). 4k, 2k refer to the number of columns of pixels, and those terms come from cinema and visual effects (and originally means 4096 and 2048 pixels wide). That means 1920×1080 is both 2k and 1080p, 2560×1440 is both 2.5k and 1440p, and 3840×2160 is both 4k and 2160p.
- vundercind 2y ago> You are misunderstanding. 1080p, 1440p, 2160p refer to the number of rows of pixels > (the p is progressive, vs i for interlaced) > 4k, 2k refer to the number of columns of pixels > 2560×1440 is both 2.5k and 1440p, and 3840×2160 is both 4k and 2160p. These parts I did not misunderstand. > and those terms come from cinema and visual effects (and originally means 4096 and 2048 pixels wide) OK that part I didn't know, or at least had forgotten—which are effectively the same thing, either way. > 1920×1080 is both 2k and 1080p Wikipedia suggests that in this particular case (unlike with 4k) application of "2k" to resolutions other than the original cinema resolution (2048x1080) is unusual; moreover, I was responding to a commenter's usage of "2k" as synonymous with "1440p", which seemed especially odd to me.