RUBIN 500   Photographers, amateur and professional alike, are drawn to the quality of our interchangeable lenses. Successive improvement of optics, increased light power and resolution, use of multi integral coating and lenses for microphotography, satisfy the needs of all our camera buff consumers.         Product Acessories: Tech Specifications Carrying case Warranty card Product Features: High quality optics Extremely durable Value priced Specifications Focal length, mm Field of view, degrees Relative aperture Operating length, mm Fastening thread Focusing limit, m Dimensions, mm Weight, kg   500 5° 1:4.5 45.5 M105x1 2.2 113x130 1.200