Assertion: camera's depth | /r/HasProperty | narrow
Facets:
value: very
type: DEGREE
value: at times
type: TEMPORAL
Source sentences:
text: The problem is that the depth of field is so narrow, the whole subject may not be sharp.
text: When you use macro mode you’ll notice that focussing is more difficult as at short distances the depth of field is very narrow (just millimeters at times).