Assertion: focal length eyepiece | /r/HasAspect | short eye relief
Facets:
value: uncomfortably)
type: MANNER
value: often
type: TEMPORAL
Source sentences:
text: Short focal length eyepieces often have (uncomfortably) short eye relief, whereas most long focal length eyepieces usually have correspondingly long eye relief.
text: The rule of thumb is that short focal length eyepiece has short eye relief.