Features 1、Using alloy shell and premium lens, high performance. 2、The lens uses 25mm lens and uses advanced optical components, ensuring all-round sharpness and high efficiency light conduction. 3、The aperture can be adjusted manually according to the available rays level. 4、Premium lens, focal length 25mm, aperture f / 1.8, suitable for low light applications. 5、M4/3 mount, compatible for E-M10 MarkIII, E-M1X, E-M5 MarkII, E-M10 MarkIII, E-M1 Mark III, E-M1 Mark III, for GF10K, S1M, DC-S1HGK-K,GH5S M4/3 mount camera. Specification Item Type: Portrait Fixed Focal Lens Material: aluminium alloy Color: As picture shown Weight: Approx. 138g Focal length: about 25mm/1in Aperture: F1.8 Elements / Group: 5/7 Aperture blade: 12 Minimum focal length: about 20mm/0.8in Front thread diameter: Approx. 37mm/1.5in Focusing and aperture: manual Frame: APS-C Mount: M43 M mount Applicable models: For E-M10 MarkIII, E-M1X, E-M5 MarkII, E-M10 MarkIII, E-M1 Mark III, E-M1 Mark III M4/3 mount camera. For GF10K, S1M, DC-S1HGK-K,GH5S M4/3 mount camera. Package List 1 x Lens