On Mon, Nov 14, 2016 at 5:53 PM, Štěpán Roučka <[email protected]> wrote: > > > po 14. 11. 2016 v 15:41 odesílatel Roman Lebedev <[email protected]> > napsal: >> >> On Mon, Nov 14, 2016 at 5:38 PM, Štěpán Roučka <[email protected]> >> wrote: >> > I usually use exiftool for this purpose. To shift all files with PEF >> > extension by +2 hours: >> > >> > exiftool -DateTimeOriginal+='2:00:00' -ext pef photo_directory >> > >> > Note: this will modify your raw files. >> You do understand that it very well will likely to completely destroy >> them, right?
> I wouldn't call it "likely" I would. PEF is based on TIFF, which is offset-based. If exiftool fails to modify just one offset, the data *will* be lost. That is the nature of TIFF. And it can (99.9% chance it does) simply because not all tags, not all internal structure if PEF is know, because it is a proprietary format. > but yes, I do. I do it after downloading from > camera before renaming according to exif and importing to darktable. This > fits my workflow well (if needed) and if anything should fail, I can just > download the photos again. Who said it will fail right away? That can happen at any point in time. It may result in whole file going garbage, or just some fields going garbage. And it may be unnoticed until well after you deleted the originals. It is on your conciseness whether to intentionally garble your data or not. But please do not suggest doing that to anyone else. Especially without warning about consequences. And yes, i'm very serous here. This *is* likely to garble your data. >> > Stepan Roman. >> > po 14. 11. 2016 v 13:33 odesílatel Roman Lebedev <[email protected]> >> > napsal: >> >> >> >> On Mon, Nov 14, 2016 at 12:48 AM, GDoirat - GMail >> >> <[email protected]> wrote: >> >> > Hello Everybody, >> >> > >> >> > I went on holiday abroad to see some of my family. >> >> > We took pictures each other. Me with my Pentax and my cousin with his >> >> > canon. >> >> > There was 2 hours of jet lag. >> >> > Unfortunatly, I forgot to adjust my camera time to local time. >> >> > Once we collate our picture in darktable, the pictures don't follow >> >> > as >> >> > we >> >> > have two hours of difference between the two camera. >> >> > Is there a way to adjust this in darktable? >> >> > If not, outside darktable (command line?)? >> >> > >> >> > I have already done that for JPG in digikam but the >> >> >> >> >digikam tools doesn't seem to work on raw for that. >> >> Oh good! That is awesome! :) >> >> Did they really finally received some common sense that it >> >> is a destructive operation and MUST never be done?! :) >> >> >> >> > Thanks a lot for your answer and your help. >> >> https://www.darktable.org/usermanual/ch02s03s09.html.php >> >> >> >> > G DOIRAT >> >> > -- >> >> Roman. >> >> >> >> > ________________________________________ >> >> > La vie est plus belle quand on est libre ! >> >> > @@@@@@ LINUX @@@@@@ >> >> > >> >> > Libérez vos oreilles : www.jamendo.fr >> >> > Compte SIP : [email protected] (audio, visio, chat) >> >> > >> >> > >> >> > >> >> > ____________________________________________________________________________ >> >> > darktable user mailing list to unsubscribe send a mail to >> >> > [email protected] >> >> >> >> >> >> ____________________________________________________________________________ >> >> darktable user mailing list >> >> to unsubscribe send a mail to >> >> [email protected] >> >> >> > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
