I did not find anything working with the EXIF tags of a .jp2 file. (doesn't
mean nothing is working !)
converting RAW-Images to JPEG very often results in visible
> deterioration of colors and lighting compared to the RAW (darker areas
> appear darker than the RAW was and brighter areas are too bright)
>
Why not tonemap <https://en.wikipedia.org/wiki/Tonemapping> your images to
a 8 bit JPEG file ?
Also there are other formats that allow you 16 bits output such as PNG,
TIFF, did you try them out ?
Bye
2013/10/14 Andreas Kahl <[email protected]>
> Hello Victor,
>
> thank you very much for your hint. After some reading I found
> http://www.sno.phy.queensu.ca/**~phil/exiftool/exiftool_pod.**
> html#copying_examples<http://www.sno.phy.queensu.ca/~phil/exiftool/exiftool_pod.html#copying_examples>
> Simply copying did not work; what worked partially was*:
> 1. **exiftool -exif:all= -tagsfromfile @ -all:all -unsafe bad.jpg**
> 2. ****exiftool -tagsFromFile src.cr2 dst.jpg*
> **
> After that I could read all the EXIF information from the RAW (RW2) in the
> .jp2 with
> exiftool image.jp2
>
> Unfortunately I could not find any viewer (for Mac) which could actually
> read the newly created EXIF:
> - Preview.app displays the same (non-)information as before
> - GIMP does not show the information
> - ToyViewer does not display any EXIF information
>
> Briefly: I am not sure if the data is written correctly by exiftool as
> only exiftool itself can read the information it wrote.
>
> Regards
> Andreas
>
>
> Am 14.10.13 14:05, schrieb Victor L:
>
>> Hello,
>>
>> I think exiftool
>> <http://owl.phy.queensu.ca/%**7Ephil/exiftool/<http://owl.phy.queensu.ca/%7Ephil/exiftool/>>
>> can do the work but i'm not sure. ExifTool on Wiki <
>> https://en.wikipedia.org/**wiki/ExifTool<https://en.wikipedia.org/wiki/ExifTool>>
>> says it cannot create JPEG2000 tags.
>> Here is an example on how to use it : *exiftool -tagsFromFile Source.RAW
>> Dest.JPEG*
>>
>>
>> Hope it helped !
>> Bye
>>
>>
>> 2013/10/13 Andreas Kahl <[email protected] <mailto:
>> [email protected]>>
>>
>>
>> Hi there,
>>
>> converting RAW-Images to JPEG very often results in visible
>> deterioration of colors and lighting compared to the RAW (darker areas
>> appear darker than the RAW was and brighter areas are too bright). I
>> suspect this is due to only 8bit color depth in JPEG. To avoid this I
>> would like to use JPEG2000, but in Preview.app (Mac) all the
>> metadata is
>> missing in the jp2-Files (e.g. information about aperture, exposure
>> time, iso, lens,...).
>> Is there a possiblity to copy this information from the RAW into a
>> jp2-file?
>>
>> Andreas
>>
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>>
> --
> Andreas Kahl
> Mail: [email protected]
> Tel.: +49 (0)176 / 2005 23 73
>
>
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