Originally posted by clackers It's the sensor trying to shake any dust off itself - neat trick, hey?
No, this is definitely from the lens which only does it once at startup. I think it is probably the way this lens works in combination with the KP. The noise seems to be when the iris closes then re-opens. To add to the discussion, this is what the supplier writes:
"I believe this to be a normal occurrence withthe KP there are lots of online forums suggesting that this is common but doesnot affect the performance or quality of the lens/images."
Indeed the quality of the images does not seem to be affected.