On 15 Jun 2006 at 18:30, Shel Belinkoff wrote: > So, if JPEG loses, or throws away, a lot of information, why are the files > when converted to TIFF (or PSD) so large? Where does the extra info come > from? And why does Photoshop show the smaller JPEG file to be the size of > the larger TIFF or PSD file.
The jpg file size reflects the compressed image ie the data has already been discarded, opening the image or converting it to a TIF reconstructs the image (assuming no TIFF compression). Any image files raw bitmap size can be easily calculated; vertical by horizontal number of pixels x bit depth x number of channels (simple RGB is 3) divided by 8 (to find the number of bytes). -- Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http:/home.swiftdsl.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
