B079LVNS7W Opteka 6.5mm f/2 HD MC Manual Focus Wide Angle Circular Fisheye Lens for Sony E-Mount A6600, A6500, A6400, A6300, A6100, A6000, A5100, A5000, A3000 and NEX Mirrorless Digital Cameras

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ADVANCED OPTICS: Featuring an optimized design, this lens uses a series of 6 optical glass elements (one SD super-low dispersion) in 5 groups to reduce chromatic and spherical aberrations throughout the aperture range. A high definition anti-reflective coating suppresses lens flare and ghosting for increased contrast and color fidelity.
ULTRA-WIDE VIEW: 6.5mm which translates to 9.75mm on Sony E APS-C format, which produces a strong visual distortion intended to create a wide panoramic or hemispherical image. This type of effect complements extreme sports or special effect photography.
SOLID CONSTRUCTION: Full metal body, aperture ring and rear mount allow this lens to withstand wear and tear much better than plastic lenses while commanding a rugged, solid feel when using.
DIFFRACTION EFFECTS: Sunstars are a fantastic way to bring a feeling of drama and excitement to a boring sky. A 9-blade aperture diaphragm delivers beautiful, sharp 18-point sunstars which makes photographs visually appealing.
COMPATIBILITY: Can be used on all Sony E mount APS-C format mirrorless digital cameras including a6500, a6300, a6000, a5100, a5000, a3000, NEX-6, NEX-5N, NEX-5T, NEX-5R, NEX-5, NEX-3N, NEX-3, NEX-F3 and NEX-C3. Can also be used on full frame E-mount cameras that have the option to switch to APS-C mode.