http://www.dchome.net/viewthread.php?tid=983646&extra=page%3D1
(in Chinese, Google English Translation Here)
Locate and find the UFOs (aka "Pearls" or "Sensor Stains") in the picture yourself, I am sure that you will see them! Btw, the K-5 user is much annoyed and upset!
Too bad.. It seems that the UFOs will re-appear again sooner or later! :-o :-(
Last Related:-
LiveView of the K-5 Creates UFOs / Pearls on Sensor?