[EMAIL PROTECTED] wrote: > Send Gimp-user mailing list submissions to > gimp-user@lists.XCF.Berkeley.EDU > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user > or, via email, send a message with subject or body 'help' to > [EMAIL PROTECTED] > > You can reach the person managing the list at > [EMAIL PROTECTED] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Gimp-user digest..." > > > Today's Topics: > > 1. Re: file extensions and when to use them (Patrick Shanahan) > 2. Re: file extensions and when to use them (David Gowers) > 3. Re: file extensions and when to use them (David Hodson) > 4. Re: file extensions and when to use them (norman) > 5. installing scripts (norman) > 6. Re: installing scripts (Choi, JiHui) > 7. Re: installing scripts (norman) > 8. Re: installing scripts (Choi, JiHui) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 21 Mar 2008 20:18:25 -0400 > From: Patrick Shanahan <[EMAIL PROTECTED]> > Subject: Re: [Gimp-user] file extensions and when to use them > To: gimp-user@lists.XCF.Berkeley.EDU > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=us-ascii > > * 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. > > Sorry! I forgot to change the subject heading.
The standalone version of PTlens does not support TIF, but the plug in version does! I am using it with GIMP 2.4.1 under Windows XP with no problem. Peter Taylor _______________________________________________ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
