Zeiss SFL 10x30 BinocularsThe Zeiss SFL 10x30 Binoculars are lightweight, ergonomic, and have excellent optics. Reducing the objective lenses to 30mm allows for a proportionately smaller chassis resulting in a weight of only 16. 2 ounces. The SFL SmartFocus Concept places the focus wheel where you don't have to stretch your finger to reach it, and the focus goes from the 4. 9' close focus to in just 1. 4 turns. If you have difficulty finding a binocular to fit closely spaced