Traduzione in corso passo 32
The geartrain for the lens retraction motor is inside this corner of the lens module.
(Note in this photo, the optical viewfinder is still attached to the right)
In the 2nd photo, viewed from another angle there's a hint of the lens retraction geartrain - the small white gear visible through a hole in the back. The lens retraction motor is highlighted with the yellow rectangle in the 2nd photo.