First S-series models to feature ED (Extra-low Dispersion) glass elements, assuring a clear, high-contrast view of the image field and effective compensate of chromatic aberration
- 42-millimeter-diameter objective lenses to assure outstanding viewing performance, effortless observation of the subject and great operability
- Application of a full multi-coating process and a special coating process designed to optimize light transmittance, assuring a clear view of the subject with minimal glare and ghost images
- Waterproof construction equivalent to JIS Class 6 standards for dependable use in adverse weather conditions
