Strange things.
I was shooting low priority nature stuff today. Canon 20D with a Kingston Elite Pro 2GB CF card, 50X. The card is about 80 days old, and it has probably seen 1000 image files go by. After each transfer of images through the card reader to the computer, I always reformat the card in the camera.
Anyway, I was shooting along after ten images or so and the camera halted and displayed "CF err". Hmmm. I switched off, removed the card, substituted a Lexar card, switched on, and continued shooting normally.
When I got the Kingston card home to the computer, I dropped it in the card reader, and the computer could not do anything with it, claiming no files and no formatting. Hmmm. BTW, the computer took the Lexar files normally.
So, with the Kingston card in the reader, I fired up some image recovery software. It takes a while to run. Of course, it searches the entire card, so it came up with ten or so new ones and also about a hundred old ones that had been formatted over weeks ago. Even though the new files were RAW (.CR2), they were recovered as TIF. Hmmm.
I renamed the ten new files to be .CR2 and then threw them onto the RAW converter, which took them fine. Then, I tried to get the computer to do a complete format on the Kingston card. It wouldn't touch it. It could not complete the format. Now I am a little worried.
Next, I put the Kingston card back into the camera, and it said No Images. OK. I did a quick format, and all of a sudden it looks normal. I fired off about a dozen test shots, and everything looks normal. Everything transfers normally, and the test images are normal. I put it back to the computer and did a complete format again, then put it back to the camera and did a quick format again. All looks normal.
What do you say I leave this card only for low priority shooting for a while?
Can anybody explain what happened? Cosmic rays, or the wrong phase of the moon? <g>
---Bob Gross---

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