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These objectives are used or demonstrator models that may show regular wear and related cosmetic irregularities.  Each objective is tested for optical performance.  The unique performance of Nikon CF (chromatic-aberration free) objectives is a result of Nikon's advanced technology in glass formulation and lens manufacture.

Nikon has pioneered multilayer anti-reflection coatings, computer aided lens design and unique extra-low-dispersion ED glasses with properties similar to flourite materials.

Nikon CF N Plan Achromat Objectives offer the performance that was once associated only with Flour objectives. These objectives avoid the demerits of conventional Achromat objectives to ensure incredible image sharpness over the entire field of view. Superb resolving power due to higher Numerical Aperature (0.30) and high contrast are joined by excellent image-curvature correction, making possible ultra-wide field observation. Features 9.22 mm working distance. List Price: $608.00.