Sony A900 - Manual (Page 22)

22
Note on changing the lens
The camera is equipped with an anti-dust function to prevent dust from
landing on the image sensor. However, quickly change the lens away from
dusty locations to keep dust or debris from getting inside the camera when
attaching/removing a lens.
If dust or debris lands on the image sensor
Clean the image sensor using [Cleaning mode] in the
Setup menu
(page 36).
2
Replace the cap on the lens and attach the body cap to the
camera.
• Before you attach the cap, remove dust from the cap.