Introducing the Alpha a7S Iii - a new milestone in sensitivity, speed and image supremacy. Featuring an all-new 12.1MP backside illuminated full-frame sensor with twice the readout speed for ultra-clean low-light images up to Iso 409,600 with 15+ stops dynamic range and 3x reduction in rolling shutter, plus Sony's acclaimed fast hybrid autofocus with 759 phase detection Af points. A new Bionz Xr processing engine deliver 8x more processing power for up to 120p 4K 10-bit 4:2:2 and full pixel readout in all recording modes..