if you "have to" take your sensor in to be cleaned, it has absolutely nothing to do with the camera. that means the user was not careful when switching lenses and storing.
olympus is not even on the same level as canon or nikon. no self respecting professional photographer uses an olympus.
next time theres a football game on, watch the sidelines. (super bowls coming up soon). you will see a ton of long white lenses on the sideline. all Canon L glass.
but what do i know. i only get payed for my pictures.
