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Mega Pixel to Mega Byte conversion table

can some one direct me a link that illustrates Mega Pixel to Mega Byte conversion. eg: 5 M.pixel = xx M.bytes etc etc etc. thanx travis

by travis beard at 2007-12-28 04:34:57 UTC (ed. Mar 12 2008 ) Kabul , Afghanistan | Bookmark | | Report spam→

That table would depend so much on the file format/compression/color depth/layers/color mode (am I missing anything?) that it would be tough to make generalizations. Even the size formatting of the hard drive could effect the size. I would try to make one yiurself for the settings you would normally use (i.e. RGB, JPG, 100 Quality, 8-bit, on your hard drive).

by Brian C Frank | 28 Dec 2007 04:12 | Des Moines, ia, United States | | Report spam→
ok. so for a raw file, 8 bit, no layers, RGB, i dont see how my hard drive would effect this. i needing to know for in camera use. thanx brian. T

by travis beard | 28 Dec 2007 04:12 | Kabul, Afghanistan | | Report spam→
Different formatting and drive sizes effect the size of the sectors on the drive. This is just a hypothetical example, but is a sector is 5KB in size, and the file is only 3KB, 2 KB are simply wasted and unused. Usually the larger the drive, the larger the sectors. A file that may be 2MB on a 2GB CF card may grow when copied to a 160GB hard drive formatted. The difference will be small, and honestly, more noticeable when you are dealing with larger numbers of small files, but I didn’t know how accurate you were looking to be.

I went hunting for a comparison chart, but could not find one. You can, however, take a raw image in PS CS2, and save it as a .dng at different megapixel resolutions, then you can see what size they are.

by Brian C Frank | 28 Dec 2007 05:12 | Des Moines, ia, United States | | Report spam→
This comes close. You need to input pixel dimensions, but it then calculates the MP and various file sizes.


by Raoul Wegat | 28 Dec 2007 05:12 | Melbourne, Australia | | Report spam→
That is sweet. Nice find Raoul.

by Brian C Frank | 28 Dec 2007 05:12 | Des Moines, ia, United States | | Report spam→
Three mega-pixels = One Megabyte

That’s for an uncompressed TIFF file. So a 30 mega-pixel camera will give you a 10Mb TIFF file. The whole “mega-pixel” thing is marketing bullshit anyway.

by James Colburn | 28 Dec 2007 15:12 | McAllen, Texas, United States | | Report spam→
??? Dont think so james.

a 6mp camera works off 3 colour channels/layers giving a 18mb (3×6) RGB 8bit tiff. COnvert that to CMYK and you get another 6mb totalling 24mb cos there’s now a fourth layer/channel.
a 12mp camera working off 3 channels/layers gives a 36mb (3×12) RGB 8bit tiff.

by Con O'Donoghue | 31 Dec 2007 15:12 | Barcelona, Spain | | Report spam→

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travis beard, Photo-Video-Music-Events travis beard
Beirut , Lebanon
Brian C Frank, Photographer Brian C Frank
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Raoul Wegat, Photographer Raoul Wegat
Melbourne , Australia ( MEL )
James Colburn, Photographer/Photo Editor James Colburn
Photographer/Photo Editor
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Con O'Donoghue, Photographer Con O'Donoghue
Dublin , Ireland


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