Noooo... It's 6 040 064 pixel * 24 (colour depth - in bits per pixel) = 144 961 536 bits = 144 961 536/8 = 18 120 192 bytes = 18.12 MB.
I you meant 24 bits/8bits pr byte = 3 (explaining the "3" in your math) - it's fine. I guess I don't understand what a jpeg compression really does! But you are right - I saved a jpeg file as a tif and then it kept the 18MB size, showing this in the Path Finder. Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: Sam Jost [mailto:[EMAIL PROTECTED] Sendt: 13. november 2004 12:10 Til: [EMAIL PROTECTED] Emne: Re: Reducing File Size with Photoshop > Can anyone explain: > Why is the file size of an *ist D image say 3.936 MB in the Path Finder, > and > 17,3 MB when opened in PS? I'd guess 3.936MB is the file size, probably jpeg (compressed) And 17.3 MB is the uncompressed image data for the image (3008x2008x3) Sam
