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Autor locks

pa nije isto 1920x1080 i 2560x1440 na istoj dijagonali ekrana.

Naravno da nije, ali si ti napisao da N8 ima 2k, medjutim:
1920 x 1080 (1080p) je FHD (skracenica 2k)
2560 x 1440 (1440p) je QHD(skracenica2,6k)
3840 × 2160 (2160p) je UHD (skracenica 4k tj dva puta velicina FHD)

c/p tablice:

• 720p = 1280 x 720 - is usually known as HD or “HD Ready” resolution
• 1080p = 1920 x 1080 - is usually known as FHD or “Full HD” resolution
• 1440p = 2560 x 1440 - commonly known as QHD or Quad HD resolution, and typically seen on gaming monitors and on high-end smartphones. 1440p is four times the resolution of 720p HD or “HD ready”.
• 2160p = 3840 x 2160 - commonly known as 4K, UHD or Ultra HD resolution. It’s a very large display resolution and it’s found on high-end TVs and monitors. 2160p is called 4K because it offers four times the resolution of 1080p FHD or “Full HD”.
• 4320p = 7680 x 4320 - is known as 8K and it offers 16 times more pixels than the regular 1080p FHD or “Full HD” resolution.