>eyepoint is 18mm. Dioper adjustment without auxilary leneses >is -3 to +1 m.
And the middle setting (default) is -1.
An undeniable paradox: To think that there is any such thing as an absolute rule is at worst naïve, and at best, shortsighted. There is no such thing as an always-true, all context- or situation-salient, absolute rule that always holds true…including this one!