If you need to focus closer than the normal 10 yd range, you can cheat it a little by zooming the oculus ring at your eye. It's not the proper way, but it works. Normally setting the oculus for a sharp reticle against a blue sky and leaving it alone is the correct way. Also reducing the zoom down to 6X or lower helps. You really don't need to shoot 10 yds at 16X zoom.