B00SLP1EI8 Samyang 10 mm T3.1 VDSLR II Manual Focus Video Lens for Micro Four Thirds Camera

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Industry Standard 0.8 pitch gearing on Focus and Iris rings
De-clicked aperture for smooth focus pulls. Compact and Light
14 elements in 9 groups with an aspherical and a hybrid aspherical lens element
Ultra Multi Coating on lens minimizes flares and ghosting
Depth of Field markings on side of the lens