I went to a three day convention on May 20th – 22nd and almost exclusively used the K-5 without any issues. Around a week after getting back I visited a local park to get out of the house and take some nice scenic photos. As I began to take photos, it started making strange mirror slapping sounds when any button on the camera was pressed. I took the lens off and hand cycled the aperture mechanism, took out the battery for a few seconds, and cleaned off the lens contacts. The issue went away. I assumed it was just a fluke. Here's the mirror flop in action: https://youtu.be/9rZ50NEmLdE I found this posting on the Pentax Forums that described the same issue I was having, but at the time I thought it might have just been a fluke. Oddly enough, the original poster is located around 100 miles from me. I wondered if maybe it was just a one time issue due to the change in weather… A few days later I went to a local airshow. This time the K-5 had the problem, but much more seriou...
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