FujiFilm X100V New Features Manual page 4

X100V Owner's Manual: P 150 Ver. 2.00
ND FILTER
Selecting ON enables the camera's built-in Neutral Density (ND)
filter, reducing exposure by the equivalent of 4 EV. This allows
slower shutter speeds or wider apertures to be used with bright-
ly lit subjects, making it possible to blur motion or soften back-
ground details without risk of overexposure.
Options
ON OFF
N The ND filter can now be used during movie recording.
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