Steve Kelley | In world of NFL coaching, Jim Zorn has arrived. Originally published November 24, 2008 at 12:00 am Updated November 23, 2008 at 10:15 pm. On Sunday, as the Seahawks lost for the ninth time in 11 games and the fourth time in a row, it is worth taking a moment to celebrate Jim Zorn's success. Share story.
Eye relief refers to the distance between your eye and the lens at the rear of the scope that will give you a full crisp view, no dark ring around the edges. Important to know for high recoil calibers to avoid a black eye or worse. Some scopes are single power (3Ã32, 4Ã30 for example) which means no adjustments.
In binoculars or goggles each eyepiece must be adjusted separately. To do this close your left eye and adjust the right eyepiece. Then open you left eye and adjust the left eyepiece to get a full contrast image. Some night vision goggles require objective focusing first, and then adjusting the eyepieces. Remember, that all night vision devices have a minimal focusing distance, a minimal distance at which objects can appear in full focus.