Feature:1. Wide Compatibility: Suitable for M mount cameras such as for M, M240, M3, M6, M7, M8, M9, M9p, and M10, ensuring wide compatibility and the ability to record wonderful images.2. Standard Portrait Lens: Featuring a golden 50mm focal length, this lens is perfect for capturing portraits, landscapes, street photography, and more, delivering outstanding background blur and sharpness.3. Larger Aperture: With a wide F1.1 aperture, this lens allows for greater light intake, enabling you to achieve dreamy background blur and create beautiful photos with remarkable visual impact.4. 7 Layer Optical Coating: The lens is equipped with a 7 layer optical coating and a refractive index of 1.9, effectively reducing glare and producing clearer and more vibrant images.5. Multiple Optimizations: Through meticulous corrections of spherical and chromatic aberrations, this lens excels in controlling dispersion for large aperture lenses, resulting in excellent contrast and sharpness at the focus point.Specification:Item Type: Prime LensMaterial: Metal frame, optical glassWeight: Approx. 536g/18.9ozFilter Diameter: 58mmFocal Length: 50mmAperture: F1.1 to F16Frame: Full FrameAnti Shake Function: No anti shake functionRefractive Index: above 1.9Nearest Focusing Distance: 0.5m/1.6ftLens Structure: 6 groups and 7 piecesAperture Blades Number: 11Focus Mode: Manual focus, auto focus (for A7II A7RII with adapter ring only)Lens Mount Type: for M mount.Package List:1 x Prime Lens1 x Front Lens Cap (Installed)1 x Rear Lens Cap (Installed)1 x Cleaning Cloth