Question about Fuji FinePix S5500 Digital Camera
How do these thing work, when I compress a JPG file it does not get any smaller, does any one know, I hope there is no image quality loss, I have ordered a 1GB card and I am thinking now that I would have been better getting 2x 512MB cards.........
Posted by Anonymous on
Do you mean, you use Winzip or some program to compress one or more of your pictures (jpgs) into a zip file? ZIP file will not modify your JPGs, so your JPG pictures would be the same quality before and after the zip process. JPG itself is a way to compress the original picture that your camera took. On some cameras, you can specify the quality of your pictures (not only resolution), and that determines how much the camera will try to compress the original picture. See link below for example pictures of different JPG qualities. Because JPG is already a compressed file, Winzip or other compression program usually can not compress it much smaller. Some camera allows you to save the pictures in RAW mode, and there is no JPG compression there, so in theory, the picture have more details. And you would be able to use Winzip to make the file smaller. Here is a link that explains JPG in more details http://www.brycetech.com/tutor/windows/jpeg_compression.html
Posted on Sep 04, 2005
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