Careful using Nikon software to transfer files to a hard drive

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Iliah Borg Forum Pro • Posts: 23,987
Careful using Nikon software to transfer files to a hard drive
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I was looking through some of the old shots and found a folder with NEFs that no raw converter but Nikon Capture was able to open.

The reason, as it turned out, was that I used Nikon Transfer to copy files from a memory card to my hard drive, and that Nikon utility messed up exif and makernote data, to the point that makernote data is not even readable with exiftool.

The bits per sample field for raw data was set to 16 instead of 12, and every third-party raw converter rejected the files because width * height * 2 is larger than the size of raw data.

Turns out, I'm not the only one with this problem, there is some fix for such cases (regrettably, not for my case): http://owl.phy.queensu.ca/~phil/exiftool/fix_corrupted_nef.html and discussion here http://u88.n24.queensu.ca/exiftool/forum/index.php/topic,4220.0.html

I was able to add support for my case to LibRaw, so that LibRaw-based raw converters will be able to open the files that were messed up like mine.

To try to add support for similar corruption scenarios for other cameras as well as for some other versions of NEF formats we need examples.

If you have any NEF / NRW files corrupted due to the use of Nikon software to copy the files from a memory card, please upload some samples to Dropbox, Google drive, WeTransfer or other service and send the links to info@libraw.org

We don't share samples unless the owner explicitly asks us to do so.

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