FujiFilm KLASSE W Owner's Manual page 58

Bulb Photography
Press the
You can proceed to select other modes.
To quit the setting and start photographing, press the
shutter button halfway.
When it is not operated for 5 seconds or more, the mode
is automatically set and the camera becomes operable.
58
button to finalize the setting. When the film sensitivity mode (
when the film is ISO800 or higher) is selected,
the camera is ready to take photos with the
selected mode.
When the bulb mode is selected, " " is displayed
on the LCD.
Viewfinder
( When pressing the shutter
button half way)
" " is displayed.
mode