Assertion: shutter's blade | /r/HasProperty | open
Facets:
value: for the required time
type: TEMPORAL
Source sentences:
text: The blades slide over each other in a way which creates a circular aperture which enlarges as quickly as possible to uncover the whole lens, stays open for the required time, then closes in the same way.
text: The blades slide over each other in a way which creates a circular aperture which enlarges as quickly as possible to uncover the whole lens, stays open for the required time, then closes in the same way.