Time Exposure Device:
When “T”(Time) exposure is desired, set the shutter speed dial at “B”, depress the body release button and turn the tip of the button counter-clockwise to lock it in place. This will hold the shutter open. To close the shutter, turn the tip of the button clockwise.
The body release button has a safety lock. When the camera is carried with the shutter cocked, it is best to set the safety lock. To set the safety lock, rotate the tip of the release button clockwise. When the red dot is in outside position, shutter is locked.