The sony alpha a7s mark ii is a replacement to the a7s with enhanced video functionality a faster af system and extraordinary low light capabilities that will appeal both to photographers and video specialists in addition to internal 4k video recording with full pixel readout the a7s mk ii also offers s gamut3cines log3 new gamma assist display enhanced zebra function full hd at 120fps and 4x5x slow motion recording at the heart of the a7s mk ii is a full frame 122 megapixel image s