Low batteries lead to corrupt SD card?
I had something weird happen to me while I was shooting some self portraits with my K-r. I was using a remote to shoot pictures of myself, then walking back around the camera to chimp the shots. I did notice the battery showed red, but I was shooting with 4 AA batteries. I know sometimes the K-r can last quite a few shots with the low battery warning, so I thought nothing of it.
I took several shots and reviewed them. Then I went to get another slave flash to set up. The camera had gone to sleep, so I half pressed the shutter to wake it. I took another shot and went to chimp it. It was then I noticed at all the shots I'd taken in this session were GONE. The couple I had just taken were there, but the ones I took earlier were missing. They were there earlier when I reviewed them. And pictures from previous days were there, but the new ones were gone. This had never happened to me before. I've owned a K-2000, K-x, and K-r.
I kept shooting, and eventually all the pictures I took after that point vanished as well. At this point, I put the SD card (8GB Transcend Class 10) into my computer and ran a disk check. It found 51 corrupt files. It could not recover any of them. They were throw away shots anyway, so no biggie about that part. I did a non-quick format and then re-checked the card. It now comes back clean.
I posted about this on facebook, and a friend admonished me for shooting with a low battery, saying that this was known to corrupt SD cards. I have never heard of this before. I've happily snapped until the camera shuts down many times without incident.
Has anyone seen this happen before? With a Pentax or other camera?
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