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In the last shoot I did with my K-5, I had lots of corrupted files (28 out of 650). The corrupted files were spread across two SD cards (Scandisk 8GB Extreme). The corrupted files had about half of the image white with lots of colored lines.
I was shooting in RAW. The preview JPG looked fine, but the corruption showed up when I imported to Lightroom. I tried re-importing from two card readers and the camera itself. When I opened the card in explorer and looked at the corrupted file in Photoshop, it looks like they are corrupted on the card, not during the import process.
I ran a test by filling up each card again after formatting them. This time, I had 12 corrupted files on one and 8 on the other.
I'd like to believe that it is a bad card, since that's an easy fix. However, I find it hard to believe that I had two Scandisk Extremes go bad at the same time. I'm concerned that there may be something wrong with the camera instead.
Has anyone else had a similar problem?