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What happened here? SD card issue or cam?


skuromis

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Hi, any explainations for the enclosed output?

Uncompressed DNG, viewed with Aperture3.

 

Thanks,

Marc.

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You would not believe it, but the same thing happened today on my canon 5D3 writing to a sandisk SD card!

 

If it were film I would say we got a light leak and bad winder mechanism, but on a digital?? Have no clue. Never seen this before.

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I can only say NEVER delete images. Reformat the card in camera.

 

Deleting only removes or actually says the storage location on the card can be overwritten with new file. The original address of the first image stays in the directory or table of contents. That tells the reader where to find the image in the storage locations.

 

By deleting you eventually get fragmented files that are harder to retrieve just like on the computer.

 

If image review on camera is ok, it is a computer problem.

 

If image review is the same as above pic, then the card is screwed up or possibly camera.

 

I would reformat in the computer to FAT and then again in the camera. If you still have trouble, try another card, a known good one. After that it is camera repair.

 

Real Sandisk are very good, but it is one commonly counterfeited and they use cheap substandard electronics which cause trouble. Never buy them cheap off EBAY.

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The card I used is a fairly new (less than a year) sandisk extreme pro 16gb from a reputable dealer and correct rescue pro serial no. I never delete pictures on cam, always empty the card before it goes back in the camera.

 

And the preview looked exactly like the posted pic.

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  • 2 weeks later...

Ok, I formatted the cards, I have three, two very different makes. First to format with overwriting indeed did the trick, but now it appeared again, on all three cards.

Format without overwrite is useless... As much as I like the cam, but this is a real problem.

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