It came as somewhat of a surprise when we discovered it uses a mechanical shutter.
A mechanical shutter this fast is still to this day uncommon.
I noted that there's laws which require sufficiently high-powered lasers to have a mechanical shutter.
It has to have a mechanical shutter which physically blocks the aperture of the laser.
Precise control of the integration time replaced the use of the mechanical shutter.
With a mechanical shutter the speeds would be 1/60 and 1/250 sec., respectively.
Electronic video cameras do not have mechanical shutters and allow setting shutter speed directly in time units.
The FM was constructed almost entirely from metal and used a mechanical shutter.
As the combustion process is so rapid, mechanical shutters are difficult to arrange with the required performance.
In most cases the camera does not have an actual mechanical shutter.