The STX eyepiece is the foundation of Swarovski’s modular scope system. This straight eyepiece module houses the prisms and zoom mechanism. When coupled to either the 65mm or 85mm objective modules the magnification range is 25-60x, and 30-70x when attached to the 95mm objective. On all of the objective modules this eyepiece delivers a remarkable clear, crisp and wide view with excellent contrast and colour rendition. The very large eyepiece lens and 20mm eye relief makes for very comfortable prolonged viewing, including for glasses wearers.