I saw on a forum that someone suggested to use ExifTool but this is outside of my toolbox. I have no knowledge on programming so my apologies for my level of understanding ahead of time. Hoping you can help!
Here is my situation: I shot photos in RAW on my Canon Mark II. Images looked great in the camera. Downloaded the photos onto two external hard drives and previewed the thumbnails to make sure they were all there -- all seemed well. No problem until I imported into Lightroom and my photos turned into rainbow streaks. Tried the other hard drive and same problem. Also tried on a different computer, still the same problem. I saw on the beforementioned forum that someone suggested to extract a jpeg image from it and that saved the day for that person. My problem is I have no idea where to start.
You could start by sending me one or two and I'll take a look. My email is philharvey66 at gmail.com
Then I can recommend a course of action for the rest.
- Phil
I got the image, thanks.
I can extract a preview image, but unfortunately it is streaked as you described. It looks like the file corruption occurs somewhere in the middle of the preview for this file. Some other previews may be recoverable. try this command on a directory of corrupted CR2's to see if any are still intact:
exiftool -w _preview.jpg -previewimage -b DIR
- Phil
thank you! Quick question, forgive me, how to do I get to the directory of the corrupted file and type the command?
See this thread (https://exiftool.org/forum/index.php/topic,4888.0.html) for help with that.
- Phil
Excellent! Thank you!
Hello Mr. Harvey! Just wanted to update you on what we found was the problem to my issue and to thank you again for all you help. Turns out the culprit was my brand new Lexar professional card reader which apparently needed a firmware update. My brand new Lexar professional 1066X Compact Flash UDMA7 memory cards firmware clashes so to speak with the outdated firmware and thus corrupted my images when uploading to my computer. Warning to everyone else, this could happen immediately or in a year or so before it happens to another card. Very frustrating.
I am trying to restore the images from the new cards (after updating, of course, to the new firmware) as we speak but Lexar have also offered to have me send in the cards for their professional retreival if not all my images reappear. I would have never thought that a card reader would have been the culprit but I thought you would be interested to hear about this.
Thanks. Very interesting. I didn't even know that card readers had firmware.
- Phil