* norman <[EMAIL PROTECTED]> [03-21-08 13:06]: > I usually shoot in RAW and convert with UFraw plugged in GIMP. Then I > have a choice of extensions to use for saving the file produced. I > presume that if I use .xcf there is no compression and if I use .jpg > there will be some compression. When working on the file I assume it is > best to save as .xcf and not to use .jpg until the picture is finalised. > I would like to know how the contents of the .jpg file so formed compare > with the contents of a .jpg saved directly on the camera. > > The reason I ask is because I would like to use PTLens to remove CA but > it seems that the software will only work with .jpg.
*compression* is not the problem as such. "lossey" compression is the problem, you *lose* some of the definition of your object/picture when you *save* it as jpg. jpg is a lossey compression scheme. If ptlens is your *only* choice, you have no choice except to perform that operation as the last operation. You will still have a minimum of two lossey saves. -- Patrick Shanahan Plainfield, Indiana, USA HOG # US1244711 http://wahoo.no-ip.org Photo Album: http://wahoo.no-ip.org/gallery2 Registered Linux User #207535 @ http://counter.li.org _______________________________________________ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
