July 30, 2014, 05:54:48 PM

Author Topic: corrupt file name provided by my 7D  (Read 3884 times)

fotoray

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corrupt file name provided by my 7D
« on: June 30, 2011, 07:34:57 PM »
I have always formatted my CF card with the 7D.  The standard RAW file name has been IMG.xxxx.CR2.

Suddenly I now get _MG.xxxx.CR2.  The file itself is OK, just the name that is automatically written has somehow been corrupted to  _MG.xxxx.CR2.
 
I have been numbering my files continous via the 7D menu.   Thought of resetting the numbering to zero, but would rather not, if it's not necesary to fix this issue.

Any ideas of how file name got corrupted, and how to get rid it? 
5D Mk III | 7D | 20D | EF-S 10-22 | EF-S 17-85 | EF 17-40 f/4L | EF 24-105 f/4L | EF 70-300 DO | EF-S 60 macro | EF 100L macro | 580EX II | RRS Series 2 tripod | plus many gadgets |

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corrupt file name provided by my 7D
« on: June 30, 2011, 07:34:57 PM »

Mt Spokane Photography

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Re: corrupt file name provided by my 7D
« Reply #1 on: June 30, 2011, 11:24:13 PM »
Although I was not getting file name corruption but rather an error on my CF card, SanDisk tech support told me to always format the card on a pc -- not in my camera.

I had always heard the opposite ... to format using the camera as you apparently have.

When you get a issue like this, erase the card before you format it.  There are utilities that will write all zeros or ones to every memory cell, and mark bad ones as unusable.  Then a format will skip over those.  I use image rescue 4 occasionaly to completely erase a card.  This is a long process, it might take 15 minutes to do 2gb.

Ponds

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Re: corrupt file name provided by my 7D
« Reply #2 on: June 30, 2011, 11:28:45 PM »
No need to worry. The filename starts with _MG when the camera's color space is set to Adobe RGB. Otherwise it is IMG.

motorhead

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Re: corrupt file name provided by my 7D
« Reply #3 on: July 01, 2011, 06:35:32 AM »
I agree with Ponds. Thats exactly how I upload my files into DPP and its always prefixed with the _MG. you are seeing.

In fact I'm so used to it that if I saw anything else now I'd start to panic!

awinphoto

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Re: corrupt file name provided by my 7D
« Reply #4 on: July 01, 2011, 07:43:58 AM »
I had that happen a few times on my 7d.... i was able to trace it to a specific memory card i got from best buy.  I dont use that card no more and knock on wood I haven't encountered that since. 
Canon 5d III, Canon 24-105L, Canon 17-40L, Canon 70-200 F4L, Canon 100L 2.8, 430EX 2's and a lot of bumps along the road to get to where I am.

neuroanatomist

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Re: corrupt file name provided by my 7D
« Reply #5 on: July 01, 2011, 08:36:46 AM »
Ponds is absolutely correct.  It doesn't seem like card corruption.  Setting your color space back to sRGB will fix the 'problem'.  See p.82 of the manual, which indicates that images captured with the color space set to Adobe RGB will be named "_MG".
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awinphoto

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Re: corrupt file name provided by my 7D
« Reply #6 on: July 01, 2011, 09:45:22 AM »
when mine, it just created a bad file... camera couldn't read it, computer couldn't open it... With my situation it was the card screwing up.  Incorrect or odd file prefixes i would concur with neuro
Canon 5d III, Canon 24-105L, Canon 17-40L, Canon 70-200 F4L, Canon 100L 2.8, 430EX 2's and a lot of bumps along the road to get to where I am.

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Re: corrupt file name provided by my 7D
« Reply #6 on: July 01, 2011, 09:45:22 AM »

fotoray

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Re: corrupt file name provided by my 7D
« Reply #7 on: July 01, 2011, 12:28:40 PM »
Ponds is absolutely correct.  It doesn't seem like card corruption.  Setting your color space back to sRGB will fix the 'problem'.  See p.82 of the manual, which indicates that images captured with the color space set to Adobe RGB will be named "_MG".


Thanks for the feedback.  I will cease to be concerned about the "_MG" as an "error", as I prefer the wider gamut of the Adobe RGB color space.
5D Mk III | 7D | 20D | EF-S 10-22 | EF-S 17-85 | EF 17-40 f/4L | EF 24-105 f/4L | EF 70-300 DO | EF-S 60 macro | EF 100L macro | 580EX II | RRS Series 2 tripod | plus many gadgets |

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Re: corrupt file name provided by my 7D
« Reply #7 on: July 01, 2011, 12:28:40 PM »