The card may have a corruption or a file has been damaged. Many card corruptions are often a result of human error, awareness on the how the corruptions may occur can help prevent them.
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Turning the camera off mid transfer - while the image is being transferred to the card |
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Power failure – battery low |
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Opening the card door while an the image is being transferred |
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Rapid shooting – some cameras need more time to transfer images |
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Viruses up-loaded to your camera via the usb port |
Refer to link: Card recoveries
Important:
Re-format the card, don’t delete all. Recommended to re-format in the same camera
We recommend using several smaller cards instead on one large card. If a problem does occur you have a card as a back up and the more images stored on your card the longer it takes to transfer.
Use good high standard cards.