Originally posted by jpzk Old news here*, though it would be good if the people with this issue would do a better job of determining just what it is...runaway shutter, camera lock-up, flapping mirror, or ???
About the only common thread is that most seem to be K-3 power users who own/use the grip with many also using the the intervalometer or exposure bracketing feature. I would be curious how many are shooting Av mode, fixed ISO with relatively short intervals during changing light conditions (exposure time overlaps set interval).
Now, if we can get back on-topic
I suspect Vegemite contamination.
Steve
* At least one person (me?) cited this as a reason they would not buy a K-3.