jlrivera wrote:
Should I turn off IS before demounting a lens?
As a general practice, yes. If you have Image Stabilization activated on a lens, you’ll want to turn it off, wait three seconds, and then unmount the lens. Not doing this can potentially put the IS system in what we call an ‘unparked’ position, which means the optics are still floating, which could cause damage if shaken and jarred.
Found it in LensRental log!
Another possibility is to switch the camera off before changing lenses. That would reduce the problem of static on the sensor attracting dust.