Excellent condition 23mm (35mm equivalent). I bought this from B&H in March, open box condition which is B&H highest used (open box-not used) category. Here are some specs fro B&H: X-Mount Lens/APS-C Format 35mm (35mm Equivalent) Aperture Range: f/2 to f/16 Two Aspherical Elements Super EBC Coating Stepping Autofocus Motor Weather-Sealed Construction Rounded 9-Blade Diaphragm I am selling only because I do not love a 35 mm focal length. There is nothing wrong with this lens. Brand new this is currently $449.00. It's yours for $310.00. Thanks for looking. Please contact with any questions.