At 10yds it's very clear at 5X
At 20yds it's good all the way to 7X
At 25yds it's good to 9X but at 10X it's slightly fuzzy.
I just checked by ranging trees out my window (it's raining here
)
Being that it's a non A/O scope I'm not real sure what kind of problems you'd be getting into with parralex though. My groups yesterday were all shot from 50 and 100yds.
Terry