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05/11/2005 02:24:01 PM · #1 |
OK, this is what I think happened. Please someone tell me that I've done something wrong... I won't repeat it anyway.
There are two CF cards. I have a D60. CF #1 is in the camera, and it is almost full (6 prints remaining, D60's estimate). I did not turn the camera off, it went off on a timer. So, it was off as much as I could tell. I take the CF #1 out, and replace it with an empty CF #2.
I take a couple of shots, noticing that the remaining space on display indicator was in single digits. I think - it must have remembered that from the old card and I continue shooting. After two more photos, I get the CF FULL message. I'm now pissed, turn the camera off and back on, to no avail. Still full CF. I turn the camera off, take the card out, turn it back on, check the display, it says NO CF CARD, ok, off again, put the card in, and on - everything seems great- 100+ images to be taken.
Now, I got home, off to review the images, and I see a bunch of ? - question marks for the thumbnails. Insert a CF into PC to download the images, and there is nothing - no thumbs, no images that would correspond to image numbers right before the first one I took after reinserting the card in the camera.
I didn't lose much, perhaps 6 or 7 images at most, and I can re-take those any time pretty much. But this could have happened in a situation that would not repeat itself and I would be p. off.
My guess - replacing the CF card when the camera goes in the power save state is not safe. Don't take that card out unless you manually switch the camera off!
Anyone has better/more correct explanation for this one?
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05/11/2005 02:27:03 PM · #2 |
| I think your deduction is right on the money. The camera is, after all, a computer. If you change the hardware configuration on a laptop that is allowed to go into sleep mode (like removing it from a docking station), you will see similar problems. |
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05/11/2005 02:34:39 PM · #3 |
Sometimes files stay on the CF card taking up space but you can't "view" them until you put it on your PC. That happened to me last week. I put in what I thought was an empty card but after a few shots it was full even though it only showed 5 pictures. I downloaded the contents of the card and saw there was a data file leftover from a previous shoot that I forgot to delete.
Could that be your problem? Maybe? |
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05/11/2005 02:38:56 PM · #4 |
Unfortunately, not, Lori. I looked for the files on the computer, and there was nothing in any of the folders on the CF except the newly created images. Remember, I did the reboot trick and I suddenly had the space available.
I agree with Tim's assessment, as it does look like some cache in the Canon's CPU. Although I would think that the CF card is a file system that stores information about itself on itself. Oh, well...
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05/11/2005 02:38:58 PM · #5 |
go to //www.snapfiles.com
click freeware and look on the right for Data Recovery Tool. Find the one called "PC Inspector Smart Recovery" maybe you can get them back.
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05/11/2005 02:47:00 PM · #6 |
It sounds like the directory structure and/or the file allocation table (FAT) on the card got messed up. The data recovery software might very well be able to recover the shots.
I would agree that it would be highly advisable to turn off the cam prior ot card removal in teh future. |
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05/11/2005 02:49:47 PM · #7 |
Also, formatting the card rather than just erase all may help. This reinitializes everything.
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05/11/2005 03:11:53 PM · #8 |
Originally posted by srdanz:
My guess - replacing the CF card when the camera goes in the power save state is not safe. Don't take that card out unless you manually switch the camera off! |
Doesn't the instruction book mention this. Also don't format a card unless the battery has enough power. If the power is interrupted the card could be corrupted.
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05/11/2005 03:12:44 PM · #9 |
Originally posted by cpanaioti:
Also, formatting the card rather than just erase all may help. This reinitializes everything. |
I reformat everytime I pull images off the card
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05/11/2005 03:23:58 PM · #10 |
I never erase using the camera, I always delete the images on a PC. (Go in the directories and delete all. There's nothing left on it when I'm done.)
SO far, I've never had any problems with it doing it this way.
Originally posted by faidoi:
Doesn't the instruction book mention this. |
I still have the instruction book. I can't claim that I know where it is, probably in the same shoebox with all other manuals I rarely look at. Not proud of it, I subscribe to the RTFM theory myself - just that it is always easier to google or to ask people in the forums.
On a whole different topic: I've heard that the best way to have your question answered in online forums is to ask a question and then in a separate post offer a completely wrong answer. It brings on possible insults, but ultimately you get expert help from it. - I haven't used that trick here yet. People have been helpful so far without resorting to it.
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05/11/2005 03:48:34 PM · #11 |
I always format my cards (in the camera) before I shoot and never remove them unless the camera is turned off.
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