Assertion: spacecraft's camera | /r/CapableOf | use 20 mm aperture
Facets:
Source sentences:
text: The framing camera uses 20 mm aperture, f/7.9 refractive optical system with a focal length of 150 mm.   
text: The framing camera uses 20 mm aperture, f/7.9 refractive optical system with a focal length of 150 mm.