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Originally Posted by 05 Busa LE  What does it mean when a digital photograph "suffers from generation loss"? I think I get the general idea, but what exactly happens to the photograph? Does it lose pixels?
When I take a photograph with my digital camera, do I have the ability to save it as something other than a JPEG?
Interesting read; where's it from? |
Yes. Information is lost in the form of fewer pixels. And JPEG continues to throw away more information each time you save it. So, if you touch up a photo and save it, and then decide to change something else and save it, each time more detail is lost. So, if you work on a file, say in Adobe Photoshop, you want to rename the file so you always have the original untouched. Then when you change your copy, you want to get all the changes into one file and save it once.
Most digital cameras have a RAW format which saves each picture as a huge file with all the information the camera can capture in it. What you give up is the number of photos that can be stored in camera memory. Also, you need a RAW editor to work on this format. That is usually bundled in the software that comes with the camera.
I learned about this in a Photoshop class. But, the info I posted is from wikapedia. You can look up JPEG or PNG and get a lot more information.
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