Nikon DS-L4 Instructions Manual page 57

[Procedure]
(1) Press the [FL TURRET] or [SHUTTER] button.
(This operation is not required if the [SHUTTER FL]
button is already displayed. Go to the next step.)
(2) Press the [SHUTTER FL] button.
The shutter opens or closes each time the button is
pressed.
Chapter 5
Individual Operations
[MIC EASY] Screen
[MICROSCOPE CONTROL] Screen
When the shutter is open
When the shutter is closed
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