Feature: 1. 17mm F0.95 large aperture, small wide‑angle portrait lens, good at shooting photos with prominent themes, background explanations, and a sense of story. 2. The large‑aperture lens creates a small wide‑angle effect, beautiful and charming bokeh, and versatile display capabilities. It connects the transition between wide‑angle and standard lens and meets the specifications of photography. 3. Optical structure 12 optical lenses in 9 groups, 1 ultra‑low dispersion lens (ED), 4 ultra‑high refractive index lenses, 4 ultra‑high lens lenses, to solve the problem of dispersion, correct various chromatic aberrations, and increase clarity. 4. The lens also has 8 aperture blades, which can form a nearly circular aperture to achieve a creamy depth of field. The optimized lens coating also helps eliminate lens flare and ghosting. 5. New material processing technology and production technology, showing better imaging and more fine workmanship. Specification: Condition: 100% brand newItem type: Large Aperture LensMaterial: Alloy + optical glassColor: blackWeight: Approx. 784g Focal length: about 17mm Maximum aperture: F0.95 Minimum aperture: F16 Mount: M4/3 mount Lens type: fixed-focusing wide-angle lens Focusing type: manual focusing Viewing angle: 65° Lens structure: 12 elements in 9 groups Ultra-low dispersion lens: 1 pcs Ultra-high refractive index lens: 4 pcs (G2 G7 G8 G10) Extra high lens: 4 pcs (G1 G3GG5 G12) Blade: 8 pieces Closest focusing distance: 30cm Maximum magnification: 0.07 times Filter diameter: Approx. 58mm/2.3in Applicable camera: M4/3 mount for Olympus and other cameras . Package List: 1 x Lens1 x Instruction1 x Storage box