Sony Cyber-shot DSC-HX99 Help Manual page 21

3.
Adjust the diopter-adjustment lever to your eyesight until the display appears clearly in the viewfinder.
To store the viewfinder
Grasp both sides of the eyepiece and push it back into the viewfinder until it clicks. Then push down the viewfinder.
Note
Be careful not to push down on the viewfinder when it is being raised.
Be sure that the eyepiece is stored in the viewfinder unit before attempting to push down the viewfinder. If it is not stored and you
try to force the viewfinder down, a malfunction may result.
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