Assertion: focal plane shutter | /r/CapableOf | slide slit
Facets:
value: across the film
type: LOCATION
value: relatively slowly
type: DEGREE
value: for a short effective exposure
type: PURPOSE
Source sentences:
text: Flash synchronization is possible at all speeds because the shutter opens fully, unlike a focal-plane shutter sliding a slit relatively slowly across the film for a short effective exposure.
text: Flash synchronization is possible at all speeds because the shutter opens fully, unlike a focal-plane shutter sliding a slit relatively slowly across the film for a short effective exposure.