- Very, very sharp - Little to no color cast, great contrast - Smooth, circular bokeh - Little to no focus breathing - Focus marks accurate, as close as 10" - Very little flaring or blooming Lens Mount:RFMin Focal Dist:51cmFilter Thread:ø77Focal Length:35mmAperture Range:T2.2-T22Structure:10 Elements in 8 GroupsIris Blades:10 Focus Rotation:270 Degree Dimensions (Ø x L): M43:ø80 × 93.8mmWeight:638g