Assertion: filter | /r/ObjectUse | used with filter holders
Facets:
value: typically
type: DEGREE
value: most commonly
type: DEGREE
Source sentences:
text: Usually square or rectangular in form, these filters are most commonly used with filter holders or matte boxes that fit in front of the lens via screw-in or friction mount filter holder adapters.
text: These filters are always rectangular (giving the ability to move them in all directions) and are typically used with filter holders.