B088TR5TV4 Bewinner1 50mm F1.8 Large Aperture Mount Lens, CL-Mil5018N-C APS-C Half-Frame Manual Foucsing C Mount Lens Built-in 12 Aperture Blades, Professional Mirrorless(for Canon Mount)

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50mm f1.8 half frame manual foucsing leng, good image.
C mount design, can be used with adapter ring for different brands camera.
Built-in 12 aperture blades are more similar to round.
Advanced optics component, ensuring all-round clarity and effective light conductivity. Manually adjusted aperture according to the available aperture.
5 different types for you tochoose, meet your different needs.