Assertion: eyepiece's afov | /r/CapableOf | become restricted
Facets:
value: with barlow
type: OTHER
value: a little
type: DEGREE
Source sentences:
text: With Barlow (TV 2x, 2.8x Klee) the AFOV seemed to become a little restricted and again the off-axis remained vingnetted in appearance with an indistinct field stop.