Samsung gx-1 User Manual (en)

Attaching the Lens
4. Remove the front lens cap by pushing the indicated portions
To detach the lens, hold down the lens unlock button (ڻ) and
turn the lens counterclockwise.
ƃ The body mount cover (ڹ) is a cover to prevent damage during shipping.
ƃ We assume no responsibility nor liability for accidents, damages and malfunctions resulting from
the use of lenses made by other manufacturers.
ƃ The camera body and lens mount incorporate lens information contacts and an AF coupler. 
Dirt, dust, or corrosion may damage the electrical system.
Clean the contacts with a soft dry cloth.