Assertion: camera's lens | /r/CapableOf | use more light than an f4 lens
Facets:
Source sentences:
text: As a F1.8 lens is able to use more light than an F4 lens, this means it could be used in lower-light situations without having to use a flash, and is capable of producing a shallower depth of field (the part of the image that is sharp) as shown below.