1Using alloy shell and high-quality lens, high performance. 2The lens uses 25mm lens and uses advanced optical components, ensuring all-round sharpness and high efficiency light conduction. 3The aperture can be adjusted manually according to the available rays level. 4High quality lens, focal length 25mm, aperture f / 1.8, suitable for low light applications. 5M4/3 mount, compatible for Olympus 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.Condition: 100% Brand NewItem Type:Portrait FixedFocalLensMaterial: aluminium alloyColor: As picture shownWeight: Approx. 138gFocallength: about 25mm/1in Aperture: F1.8 Elements / Group: 5/7 Aperture blade: 12 Minimumfocallength: about 20mm/0.8in Front thread diameter: Approx. 37mm/1.5in Focusing and aperture: manual Frame: APS-C Mount: M43M mount Applicable models:ForOlympusE-M10 MarkIII, E-M1X, E-M5 MarkII, E-M10 MarkIII, E-M1MarkIII, E-M1MarkIII M4/3 mount camera.For GF10K, S1M, DC-S1HGK-K,GH5SM4/3 mount camera.1 x Lens