Cine DS 50mm T1.5 Full Frame Cine Lens Full Frame/ Super 35/ APS-C/ 4/3 Sensor Coverage For Canon EF Mount Test Reprts Say: “The [Zeiss] ZF.2 50mm f/1.4 is a bito f a dog compared to the new Rokinon 50mm.” - Duclos Lenses “made a strong showing in the Popular Photography test lab, it really won us over in the field…it produced strongly satisfying sharpness…and nice bokeh… the Rokinon earned Excellent range SQF scores” – Popular Photography “noticed was its slid construction…on a C100.. the lens proved to be quite sharp…click-less aperture was also very smooth,. compared to Canon’s… EF 50mm f/1.
***Micro four thirds multiply the focal length x2. So this acts as a 100mm lens. I had to return it for that reason. But it's a great lens! I love the resistance on both the focus ring and the aperture ring. Great image, very sharp, even at 4k. Loved it on my GH4, did great when filming in 4k.