This is an overview of megapixel resolutions. It is a mixture of devices (cameras, screens) and standards (video compression, VGA).

Digital cameras
Standards
1.3 MP - 3 MP - 4 MP - 5 MP - 6 MP - 7 MP - 8 MP - 10 MP - 12 MP -
Canon
Digital SLR: EOS 1Ds Mark II (16MP) - EOS 1Ds (11MP) - EOS 1D Mark II N (8.2MP) -
EOS 300D: 6.3MP (L) - 2.8MP (M) - 1.6MP (S)
EOS 350D: 8.0MP (L) - 4.2MP (M) - 2.0MP (S)
EOS 20D: 8.2MP (L) - 4.3MP (M) - 2.0MP (S)
EOS 30D: 8.2MP (L) - 4.3MP (M) - 2.0MP (S)
EOS 400D: 10.1MP (L) - 5.3MP (M) - 2.5MP (S)
EOS 5D: 12.7MP (L) - 6.7MP (M) - 4.2MP (S)
Compact: Powershot Pro 1 (8MP) -
Fujifilm
FinePix S3 Pro (6MP) -
Nikon
SLR: D2Xs (12MP) - D2X (12MP) - D200 (10MP) - D100(6MP) - D70s (6MP) - D50(6MP) -
Compact: Coolpix 8400 (8MP) - Coolpix 8800 (8MP) -
Olympus
C7070 Wide (7MP) -
Pentax
*istDS (6MP) -
Samsung
SCH-V770 (7MP) -
Phase One
Phase One PhotoPhase - Phase One P20 - Phase One P25 -
Seitz
Seitz 6x17 Digital -
Computer Screen
4:3 aspect:
QVGA - VGA - SVGA - XGA - UXGA - QXGA
5:4 aspect:
SXGA - QSXGA - HSXGA
16:9/16:10 aspect (Wide Screen):
WVGA - WXGA - WSXGA - WUXGA - WQXGA - WQSXGA - WQUXGA - WHSXGA - WHUXGA
Really old:
CGA - EGA
Digital video
Standards
VCD (PAL) - VCD (NTSC) - SVCD (PAL) - SVCD (NTSC) - DVD -
Television
NTSC - HDCAM -
QuickTime
QuickTime HD 480p - QuickTime HD 720p -
Portable devices
Mobile phones
Nokia N70 - Nokia N91 -
Media players
Apple iPod nano - Apple iPod video -
Archos AV700 -
Game consoles
Sony PSP (max) - Sony PSP (video) - Sony PSP (wide video) -
Digital cinema
Standards
HD (High Definition) - DCI Spec 2K - DCI Spec 4K -
Filming
Red One (4K) -
Scanning
Kodak 35mm (4K) - Kodak 35mm (2K) -
Mastering
4K Wide - 4K - 2K Wide - 2K -
Projection
JVC DLA-QX1G QXGA - Sony SXRD - Sony SXRD 4K -
Apple screens
Desktop
iMac 17" - iMac 20" -
Laptop
Macbook Pro 15.4" - iBook 12" - iBook 14.1" - Powerbook G4 14.1" - Powerbook G4 17" -
Cinema display
Cinema Display 20" - Cinema Display 23" - Cinema Display 30" -
References
Wikipedia: Pixels - JPEG compression - Bayer mask - Foveon X3 technology - Fourmilab

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