by damned truths

submit your photo

Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Tag Info

New answers tagged


The manual for my camera (a Pentax K100D) states that you should turn the camera off to prevent possible damage to the autofocus motor: if you bump the shutter-release button while changing the lens, it's possible that the now-exposed autofocus drive shaft will catch on something.


I think the main reason is to "park" (hard disk terminology) the components. e.g. VC/IS elements can by their nature move around. When you power the camera off, those elements are "parked". I'm pretty certain I've read in manuals/leaflets (yes it's a unsavoury habit I've picked up, I do read manuals..) that come with lenses. This may also be true with focus ...

Top 50 recent answers are included