Assertion: fp shutter | /r/CapableOf | time their fast speeds
Facets:
value: mechanically
type: MANNER
Source sentences:
text: F-1 (Japan, 1981) even had hybrid electromechanical FP shutters that timed their fast speeds mechanically, but used electronics only to extend the slow speed range; the LX to 125 s, the F-1N to a modest 8 s. Note, the Nikon F4 (Japan, 1989) was specified to reach a timed shutter speed of 999 hours with the use of the accessory electronic Multi Control Back MF-23.