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CR2 File Corruption at Import

NN1046211
I have decided to try out the software and I am still in evaluation period. However, here is what happened to me. Hopefully there is an answer.

Equipment:

* Canon 50D body
* 2 x 4GB SanDisk Extreme III CF Card. (CARD A and B) Shot RAW1 (8MPx) CR2 files.
* MacBook Pro, MacOS 10.5.5
* CaptureOne Trial 4.5.2 (Build 23434.23205) 21 days trials left

Sequence of events:
* Inserted one CARD A with about 100 files in a reader
* C1 started up and read all files and displayed the contents.
* I decided it was a wrong CARD (I needed images off CARD B)
* couldn't find EJECT button
* Extracted CARD A
* Inserted CARD B in the reader
* C1 imported started displaying vertical striped thumbnails
* I thought, it got confused, so rebooted the machine and tried reading the files again - no luck, except for the first file all others seem to be slightly shorter size and unreadable.
* Inserted CARD B in the camera - Camera got confused and couldn't read the files
* Tried using Canon DPP software - Same bad news - can't recognise files.

All I can think of is that somehow the swap of two CF cards caused C1/MacBook to rewrite the folder contents from CARD A to CARD B corrupting the CR2 file sizes in the process.

If anybody knows any solutions, I'd be happy to hear it, as these files are pretty important to me ☹️....

Anybody from tech support area needs any additional info to try to resolve the issue, I'd be more than glad to help out.

Next step for me - try SanDisk recovery, but I don't think it will work, as it will only try to recover deleted files, not files that are truncated or shortened.
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  • NN1046211
    Well, downloaded Card Recovery software to my PC, and, I don't know how, but it worked magic. Recovered every file, even some files that should not exist, as I formatted the CF card before using it - obviously 50D formatting the card does only a fast format....

    Anyway, I am happy that this is over 😊... Still the question remains, why is C1 corrupting the CF card/files??
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  • Roine
    Hello

    I had a incident regarding C1 (same version)

    I shoot directly from the camera (5D) to a iMac and had the session on a USB2 disk.

    The disk got unmounted for some reason, then C1 created a map structure on the boot disk with same name as the USB2 disk.
    In that structure C1 continue to store my session’s raw files.

    When I mounted the disk again, C1 still uses the created MAP on the boot disk. That map structure was listed as a volume by OS X.

    So the file handling in C4 is odd.

    You se the same oddness in create WEB gallery, it wipes out entire structures of your disk if You isn´t carful.

    Roine
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  • Paul Steunebrink
    [quote="NN" wrote:
    Well, downloaded Card Recovery software to my PC, and, I don't know how, but it worked magic. Recovered every file, even some files that should not exist, as I formatted the CF card before using it - obviously 50D formatting the card does only a fast format....

    Anyway, I am happy that this is over 😊... Still the question remains, why is C1 corrupting the CF card/files??

    Your card handling corrupted the cards. You should NEVER remove a card when either OS X or an application has opened it, unless you hate yourself, which is fortunately not the case here. I write this in strong words on purpose because I can't emphasis this enough. Never do this again, did you hear me!? ("Yes daddy" would be a proper response 😉 ).

    So, now without a patronizing pitch, your situation is not typical however and we all end up in such a situation every now and then. What should you have done? Cancel import in CO4 Image Import window. Next, from the Finder unload/eject the card so it will be removed from your desktop, as you always do.

    Now, I have a question for you. Does CO 4.5.2 support the sRAW (either sRAW1 and/or sRAW2) of your 50D? Previous sRAW formats were not supported.
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  • Paul Steunebrink
    [quote="Roine" wrote:
    ...
    I shoot directly from the camera (5D) to a iMac and had the session on a USB2 disk.

    The disk got unmounted for some reason, then C1 created a map structure on the boot disk with same name as the USB2 disk.
    In that structure C1 continue to store my session’s raw files.

    CO4 is not odd in file handling, it saved your day and you did not realize. Maybe that's odd, but never mind. Basically, the file handling is a OS X task, and CO4 follows.

    Due to an unexpected disk detach OS X mapped the folder structure CO4 is using for the session to a folder on your boot drive, resulting in an uninterrupted work process. The path to that folder is in your CO4 session file (Capture One.col45). I suspect you could open both sessions (on your internal and external disk) and move the files, I am not sure. Otherwise, you could move the images from your internal to your external disk with Finder first and open the session with CO4 on the external disk.

    Interesting case though. Normally, a user would complain that the application crashes, freezes or lost files. Now, your work is saved and guess what? 😉
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  • Roine
    Hallo
    Agree to a point.

    I would had liked to have a warning.

    When the drive was online You cant see the new structure due to that it is hidden by the real drive.

    So I did see it later, bye real luck due to that I dismounted the drive.

    And I have no understandig ether for the demand that the RAW files cant be R/O.
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  • Jonathan Gilbert
    Just a word to the wise... Never capture to an external drive. I have seen many a good shoot go bad and files either read wrong because the disk had different permissions or formatting, or corrupted all together during the transfer.
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