msowsun wrote in post #16090211
Yes, but that only applies if you are using the camera in Europe...
That European dust is way worse
The issue here is that there are minimum and maximum (best) practices. You can leave the power on for lens changes and risk more dust, on for card swaps and risk corrupt data, on for battery swaps and risk whatever. But no one is telling anyone what they must do and there is no absolute right answer. If you have more time and the risk bothers you, take the extra step. If you're in a rush, no worries.
For myself, on/off is when the built in cleaner gets activated - so I will power off 3 times during a session just to get this. An old school IT guy, I don't unplug 'live drives' so off for that too. Battery doesn't matter either way, so I swap as needed. IS is more interesting. There are whole threads from folks who removed their lens to soon and are worried 'that sound' means the lens is broken. Anything that parks the IS system will prevent this. If waiting x seconds is best, wait x seconds. If the waiting technique is tricky to remember, shutting down the camera is more definitive.