Nortel Networks S4000 User Manual

Basic Operations

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The camera features a two-stage shutter-release button. To set focus and 
exposure, press the shutter-release button halfway, stopping when you feel 
resistance. Focus and exposure lock while the shutter-release button is held in this 
position. To release the shutter and take a picture, press the shutter-release button 
the rest of the way down. Do not use force when pressing the shutter-release 
button, as this may result in camera shake and blurred pictures.

Press the 
shutter-release 
button the rest 
of the way down 
to take picture

Press the 
shutter-release 
button halfway 
to set focus and 
exposure