Quote Originally Posted by Frank Chambers View Post
Just a quick excursion to the mentioned Mamiya system. In the instructions for RZ interchangeable lenses, point 6 is written:

"If a lens is not to be used for a prolonged period, we recommend storing it with the shutter released. To release the shutter of a lens that has been removed from the camera body,..."

This is indeed for the Mamiya RZ lenses only.
Does it hint at what "prolonged" constitutes?