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Photography Question 
Jean Crombie
BetterPhoto Member Since: 12/7/2002
 

Difference between TIFF, BMP and JPG


I need to know the difference between TIFF, BMP and JPG. It's for a friend and she is interested in a class in digital photography that will educate her in this subject.

Thank you.
Jean


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3/7/2005 5:06:39 AM

 
Roy Blinston
BetterPhoto Member Since: 1/4/2005
  I am a Graphic Designer and work in both of these formats every day (ie: TIF and JPEG). In short... a TIFF file is the standard format (no compression), and a JPEG is the same file except it has been compressed to save space when emailing). During this compression process the file is run through an algorhythm where in the program decides which pixels to eliminate, and which not leave alone. JPEG stands for Joint Photographers Expert Group and is now the industry standard for moving photos around disks and emailing. A TIFF file is much larger than a JPEG (because it is not compressed in any way). The ratio is around 8-1 (a big difference when emailing). Also, a JPEG can be compressed to many levels. Photo editing software has a sliding scale (you choose the compression) from Level 1 (smallest file) to Level 12 (minimal compression). If in doubt, use the higher numbers to maintain some soert of quality in the pic. The higher the number, the less compressed the file will be (better quality photo). I have tried to be very brief in this explanation. There is a lot more involved, but I hope this helps.


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3/7/2005 5:37:07 AM

 
Jean Crombie
BetterPhoto Member Since: 12/7/2002
  Roy, thank you so much. My friend will be so glad to get this information and I'll keep a copy of it handy for my own use. She also asked about BMP, is that a type of format too and how is it different? Thanks again.
Jean


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3/7/2005 1:41:39 PM

 
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