Image resolution

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Image resolution

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Definition

Image resolution is the detail an image holds. The term applies to raster digital images, film images, and other types of images. Higher resolution means more image detail.

Digital:

• 500×480  : Digital8
• 720×480  : D-VHS, DVD, miniDV, Digital Betacam (NTSC)
• 720×480  : Widescreen DVD (anamorphic) (NTSC)
• 720x576  : D-VHS, DVD, miniDV, Digital8, Digital Betacam (PAL/SECAM)
• 720x576  : Widescreen DVD (anamorphic) (PAL/SECAM)
• 1280×720  : D-VHS, HD DVD, Blu-ray, HDV (miniDV)
• 1440×1080  : HDV (miniDV)
• 1920×1080  : HDV (miniDV), AVCHD, HD DVD, Blu-ray, HDCAM SR
• 1998x1080  : 2K Flat (1.85:1)
• 2048×1080  : 2K Digital Cinema
• 3840x2160  : 4K UHDTV
• 4096×2160  : 4K Digital Cinema
• 7680×4320  : 8K UHDTV
• 15360x8640 : 16K Digital Cinema
• 61440x34560 : 64K Digital Cinema

Sequences from newer films are scanned at 2,000, 4,000, or even 8,000 columns, called 2K, 4K, and 8K, for quality visual-effects editing on computers.
IMAX, including IMAX HD and OMNIMAX: approximately 10,000×7,000 (7,000 lines) resolution. It is about 70 Mpix, which is currently highest-resolution single-sensor digital cinema camera (as of January 2012).

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References

1. Wikipedia: https://en.wikipedia.org/wiki/Image_resolution