Well-built Lens😊 50mm T2.0 lens is made with 6 lenses in 5 groups, fully realises the combination of high resolution images and high quality ED, high refractive index glass. Ensuring a richly detailed picture. Effectively reduce the color offset phenomenon, so that the image has more artistic sense. | Unnoticeable BREATHING EFFECT😊 Breathing effect when focusing can be controlled. Stability of the image frame even when vignetting occurs when refocusing. The high-quality MC multilayer coating used by the lens increases the transmittance of the light, effectively reduces dazzling and ghosts. It provides a higher level of contrast. | T2.0 Large Aperture😊 The lens in the Spectrum series offers a constant aperture of up to T2.0 and a minimum of T16. It can shoot bright pictures in low light environment. The 12 aperture blades create a soft and natural focus transition,Easily get soft bokeh,make the picutre more vivid and not blunt. | 270 Degress EXTRA LONG FOCUS Throw😊 The extra-long 270 degree focusing stroke and stepless focusing gear design, which can be adapted to various follow focusers, guarantee accurate focusing during shooting. The focus movement is more delicate, more precise and finer. It meets the requirements of professionals for focusing performance. | Compatibility: 7artisans 50mm T2.0 cine lens is compatible with Leica/Panasonic/Sigma L-Mount Mirrorless Camera like FP,S5,S1,S1R,S1H,SL,TL,TL2,etc. If you're not sure, just contact with us.