Product Description: This 55mm F/1.4 prime lens is tailored for Canon E-Mount APS-C mirrorless cameras (including EOS M, M6, M10), focusing on professional portrait photography. Built with a 5-group, 6-element optical system based on the Gauss formula, it delivers sharp in-focus details and smooth, natural bokeh—perfect for facial close-ups, half-length, and full-length portraits. It offers a full-frame equivalent focal length of 85mm (a classic portrait range), striking a balance between intimacy and perspective to capture flattering human subjects. The bright F/1.4 maximum aperture excels in low-light environments (e.g., indoor studios, evening shoots) and enables selective focus to isolate subjects with soft background blur. Its manual focus design allows precise control over composition, while durable construction ensures long-term use. Beyond Canon, it also fits other APS-C mirrorless systems (Fujifilm, Sony) and Micro Four Thirds cameras (Olympus, Panasonic), making it a versatile choice for photographers seeking value without compromising performance. Key Features: Large F/1.4 Aperture: Boosts low-light performance and creates professional bokeh to highlight portrait subjects. Classic Portrait Equivalent Focal Length: 55mm (85mm full-frame equivalent) – ideal for flattering facial features and balanced portrait perspectives. Precise Optical Design: 5 groups, 6 elements (Gauss formula) minimizes aberrations for sharp in-focus details. Manual Focus Control: Enables intentional composition adjustments, great for fine-tuning portrait framing. Versatile Compatibility: Works with Canon E-Mount (EOS M/M6/M10) + other APS-C/Micro Four Thirds systems (Fujifilm, Sony, Olympus, Panasonic). 14-Blade Diaphragm: Enhances circular bokeh for soft, natural background blur. Lightweight & Durable: Metal build (272g) balances portability and longevity for on-location shoots. Specifications: Product Category: Electronics > Cameras & Photography > Camera Lenses > Portrait Prime Lenses Focal Length: 55mm (full-frame equivalent: 85mm) Aperture Range: F/1.4 (maximum) – F/16 (minimum) Optical Structure: 5 groups, 6 elements (Gauss formula-based) Focus Type: Manual Focus Minimum Focus Distance: 0.35m (13.78") Aperture Blades: 14 pieces Filter Thread Size: 49mm Weight: 272g (0.60 lb) Material: Metal (casing) Mount Compatibility: Canon E-Mount (primary); Fujifilm X-Mount, Sony E-Mount (APS-C); Olympus/Panasonic Micro Four Thirds (secondary) Sensor Compatibility: APS-C (primary); Micro Four Thirds (secondary) Angle of View: 28° (APS-C format) Image Stabilization: None Key Use Cases: Portrait photography (facial close-ups, half-length/full-length portraits), low-light shooting