Assertion: lens's image | /r/HasProperty | approximately 85 mm
Facets:
value: in diameter
type: OTHER
Source sentences:
text: The Pleon had a focal length of approximately 72.5 mm with a maximum aperture of f/8 and used a plano-concave front element 300 mm (12 in) in diameter; the image on the negative was approximately 85 mm (3.3 in) in diameter.