Instruction Manual: ZF/ZS Lenses - Carl Zeiss

Attaching and removing the ZF-lens
Grip the lens at the grooves of the depth of field ring. Align the
index mark in the middle of the depth of field scale with the
index on the camera body and insert the lens into the bayonet.
Turn the lens counter-clockwise (seen from the front) until it
clicks and the lens is locked. Remove the lens by gripping it at
the grooves of the depth of field ring. Turn the lens clockwise
while depressing the lens release knob on the camera.
Attaching and removing the ZS-lens
Grip the lens at the grooves of the depth of field ring. Screw
the lens into the thread mount of the camera by turning it
clockwise (seen from the front), until it is fixed (the index of the
distance scale should then be on the top side). Remove the lens
by gripping it at the grooves of the depth of field ring. Turn the
lens counter-clockwise, until you feel the lens released by the
camera thread mount.
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