S 20mm T2.0 is a full-frame wide-angle cinema lens for E-mount Camera A6600 A9 A7R3 A7R IV,etc . Widely used in professional video production, Vlog creation, etc. Effectively Suppress Chromatic Aberration -12 elements in 9 groups,including 1 double-sided aspheric lens,4 ED lens and 1 short wave length and high transparent lens,It can achieve excellent resolution performance from center to edge. Low Distortion - T2.0 large aperture lens uses excellent optical design and high-quality optical glass, which can effectively suppress pincushion distortion, barrel distortion and linear distortion, so that the distortion is reduced to a very low level. The distortion and distortion of the lens edge can also be reduced to a very low level. Soft and Natural Out-of-focus Blur - S 20mm T2.0 high-transmittance large-caliber lens, very accurate focusing, delicate picture, very light grain, accurate metering, clear and stable image, rich and delicate colors, film Full of sense. Snap Tooth Design - Features with standard cine lens gears on both focus ring and aperture ring to integrate with the Follow Focus to minimize focus breathing.It is convenient to follow the focus and adjust the focal length during film shooting to achieve smooth and no shaking of the shooting screen