Purchased in April and used only a few times, so it's in like-new condition. The mount is Sony E-mount. Focal Length: 25mm Focus: MF (Manual Focus) Lens Construction: 7 groups, 10 elements (2 high-refraction lenses, 2 ED lenses) Compatible Image Sensor Size: 35mm full-frame Minimum Focusing Distance: 2x/113mm, 3x/137.8mm, 4x/162mm, 5x/186.4mm Aperture: F2.8-F16 Aperture Blades: 8 Angle of View: 2X 20° - 5X 9.0° Filter: Not compatible Weight: Approximately 480g (varies depending on the mount) Size: Φ67mm x 94mm (excluding the mount) Included Accessories: Lens cap, rear cap