Assertion: eyepiece's lens | /r/HasProperty | small
Facets:
Source sentences:
text: Eyepieces are small lenses or combinations of lenses mounted in metal barrels that fit into the telescope's focusing mount.
text: Simple reflecting viewfinders comprised a small forward-looking lens, a small mirror at 45° behind it, and a lens at the top; the user held the camera at waist level and looked down into the lens, where a small image could be seen.