All FullFields have a one-piece main tube and eyepiece, our enviedsteel-on-steel adjustment system, and HiLume multi-coatings on everysingle air to glass lens surface. The FullField II is even moreforgiving for eye position, is a little shorter, and a good bitlighter. The magnification ring and eyepiece have been made into onesolid unit requiring only two seals rather than three. We still usespecial quad seals rather than O-rings so each potential leak path isdouble-sealed by design. To change magnification, simply turn theentire eyepiece.
