Q:
A: I am going to disagree with most other posters. If you need to use JPEG because you are going to immediately do something like upload them to the internet, use JPEG. Yes, it is the file type most people are familiar with, and that most cameras shoot in (at least the less expensive cameras). However, its disadvantage is that it uses a "lossy" compression algorithm. What that means is each time you open, edit and resave and close a JPEG file, it throws away data, until eventually you will see your image degrade. So instead, save it as TIFF (which if I remember correctly stands for Tagged Image File Format, although that's not terribly important.) TIFFs can be opened by any decent image editing program, they are not lossy like JPEGS, and I believe they can also preserve layers (if you are using Photoshop. They do have a disadvantage in that TIFFs are larger files than JPEGs. But if you plan to edit these image files, TIFF is really a better way to go.
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