So I bought a Leapers 3-9x40 (will arrive in 3 days) and it doesn't have AO. It has a fixed parallax at 35 yards, and for the most part, I plan to shoot at 30 meters so it's close enough, but if I want to shoot closer, let's say at 15 meters, at the minimum magnification, does parallax have a big effect? I think I can keep my eye centered to deal with the crosshair moving a bit, but will it be too much out of focus, or will it still have great quality?

Thanks in advance.