I am getting a Corrupted/Garbled RAW (CR2) file when shooting with my Canon 5D MKii. The corruption only seems to happen at the point that I save the file on my backup drive after processing in Lightroom...here is the order that I process my photos to give some background:
1. Shot in RAW in Camera and saved to various SanDisk and Transcend CF cards (30MB/s, 133x, 60MB/s) (no corruption yet)
2. Transferred via Transcent CF Card reader (TS-RDP8K) to Macbook file folder. (no corruption yet)
3. Copied files are then added into Lightroom 5 (without moving) after creating a new Catalog (no corruption yet)
4. Photos go through my standard Lightroom editing process (some photos I take into Photoshop and edit them there, some I do not...this leaves CR2's mixed with PSD files in the original file folder (no corruption yet)
5. I then copy the finished Catalog to an external harddrive (USB 3.0 WD My **bleep** Ultra 2 TB) (this is where the corruption finally shows up...the strange thing is that it is hit and miss...some Catalogs get corrupted while others are perfectly fine...the corruption only happens to the CR2 files not the PSD's)
6. My original thought was that this was being caused due to a bad cable, which could still be the issue but I've witnessed this happen on 2 different usb 3.0 cables. Perhaps the issue is tied in with the 3.0 USB? (I have also attached a screenshot after importing to Photomatix to show that the problem isn't just in the preview image but at the actual RAW CR2 level)
I have hundreds of garbled/corrupted CR2 files in my archive now with no apparent way to recover them...I need some help from someone! I haven't been able to find any other occurances of this online so any help or feedback would be greatly appreciated. Thanks!
Oh, for any CR2 experts, here is a link to download my original CR2 file: https://www.dropbox.com/s/nsfivvgrmyloa90/IMG_3440.CR2
Here is a free download. http://www.quicksfv.org/download.html you can google ones for mac.
simply right click on the group of files that you started with, it creates a CRC check. Then use that file to check the destination, and it will tell you if any file doesnt match the original. SFV stand for simple file verification. Google and learn 😉
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