Assertion: neutral density filter | /r/HasProperty | useful
Facets:
value: for flash photography
type: PURPOSE
value: in situations
type: TEMPORAL
Source sentences:
text: The neutral density filter permits effects requiring wide apertures or long exposures to be applied to brightly lit scenes, while the graduated neutral density filter is useful in situations where the scene's dynamic range exceeds the capability of the sensor.
text: Neutral density filters are also useful for flash photography.