Michael J. Hammel píše v Čt 25. 09. 2008 v 11:57 -0600: > To convert back to TIFF you can use ImageMagick's convert tool. > According to this discussion: > http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=11600 > convert will retain EXIF data. This is true as long as you're simply > converting formats and not resizing (such as creating thumbnails). > Converting file formats is as simple as > > convert file.jpg file.tif >
I am afraid that this might be true only for MS Windows. I tried on linux (ubuntu 8.04 amd64): $ convert orig_with_exif_and_icc.jpg test.tif The test.tif has only the ICC profile embedded, Exif is lost. This might be caused by libtiff library, which is different on the systems. I do not have any TIFF file with Exif, so cannot test what happens on conversions. On linux, support for creating Exif metadata is quite limited - I personally use it only for JPEGs. Also exiftool's man page reads, that it can only read or write, but not create Exif in TIFF images. > > By the way, if I save these tiff images as another files, will gimp > > also strip the icc profile? > > (ps, will gimp strip the icc profile in jpeg?) > > I looked at using ICC profiles last month in an article I did for Linux > Format magazine but I don't think I checked if the profiles were > retained when saved. I think I assumed (bad idea) that they were. > You'll simply have to try it and see. GIMP does support retaining ICC > profiles when you open files that contain them. You're typically > queried when you open the file if you want to keep it over convert it to > GIMP's built in profile. GIMP retains the ICC profile in TIFF. Best regards, Milan Knizek knizek (dot) confy (at) volny (dot) cz http://www.milan-knizek.net - about linux and photography
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