A perfect match for a7 series, 35mm full-frame E-mount camerasOutstanding optical performance in a wide 28mm focal lengthBright F2 maximum apertureDust and moisture resistant design9-blade circular aperture contributes to gorgeous bokehOptics/LensLens Mount Type : Sony E-mountMinimum Focus Distance : 0.96' 0.29mLens Groups-Elements : 8 groups, 9 elementsFilter Diameter : 49mmLens Type : 35mm full frameAperture (Max.