Olympus M.ZUIKO DIGITAL ED 12-40mm f/2.8 Pro Lenses

Performance Focal Length 12 - 40 mmComparable 35mm Focal Length: 24 - 80 mm Aperture Maximum: f/2.8Minimum: f/22 Camera Mount Type Micro Four Thirds Format Compatibility Micro Four Thirds Angle of View 84° - 30° Minimum Focus Distance 7.87" (20 cm) Magnification 0.3x Groups/Elements 9/14 Diaphragm Blades 7   Features Autofocus Yes   Physical Filter Thread Front: 62 mm Dimensions (DxL) Approx. 2.75 x 3.31" (69.9 x 84 mm) Weight 13.47 oz (382 g)