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Snelly
15th of March 2005 (Tue), 02:32
Hi There,

Found myself in bit of a predicament lately. I was using my 300D to shoot a wedding. I had been taking photo's, and about after 50 shots, I turned the camera off. I turned it back on about 10 minutes later, and started shooting again. I had the camera of for about 25minutes, shooting away madly.

I take my photos in fairly quick succession, and the camera manages to keep up most of the time, sometimes if I've taken a lot in one stretch, it takes a few seconds to catch up and write to the card. Anyhow, it was having one of these moments where it was "catching up" as the red led light was flashing. Then the camera flashed up the low battery signal, and the camera shut down. This was strange considering I use a battery grip with two fully charged batteries.

I didn't think anything of this, I just turned the camera back off and on again, and it was fine, and kept on shooting the rest of the afternoon without any problems.

When I got the camera home, I found that there were no images on the card from the point i had turned the camera back on, up to the point where it shut itself down. The 50 shots before hand were there, and everything afterwards, but nothing for that 25minutes. Its as if the camera had just not kept any of the images taken that "session". There was no jump in file numbers, everything was still consecutively numbered, the images were just gone.

I can't figure it out. I know the images were being taken, as i have the 2 second preview on, and although i didn't go and playback any images at the time, they were coming up in the preview window. I always thought the camera writes the images to the card once they're taken, so I don't understand why it didn't keep any it had taken, especially over a 25 minute period.

Any takers??

Cheers,

Toni

tim
15th of March 2005 (Tue), 02:43
You could try image recovery software, but I think you're out of luck. Try the recovery software I link to half way down this page (http://photography-on-the.net/forum/showthread.php?t=57217&page=1&pp=20) - you need a card reader to try it.

robertwgross
15th of March 2005 (Tue), 09:02
You want to think about the way that a device (such as a computer or digital camera) writes to media (such as a floppy disk or CF card). The device looks at the directory (file system data) to find out an address to write the image data. Then it writes it there. Then, when the image data is finished, it updates the directory with the new file names (and addresses).

If your device gets about 95% of the way through that and then runs out of power, the directory is not updated. So, effectively, the image data is sort of present, but without any entry in the directory, the image data is not usable without "finding" it with some CF card recovery software. That software will find the data and complete the directory, if you are lucky. Complications can happen, though.

---Bob Gross---

Snelly
20th of March 2005 (Sun), 01:01
I have to thankyou from the bottom of my heart. I took your advice and downloaded Photorescue, and tried my luck with the CF card. I had all but given up hope, and wasn't too optimistic about finding the images on the card.

I cried like a baby when the images appeared. Thankyou all for taking your time to help me out, you may never know how much it is appreciated.

Kindest Regards,

Toni