Sony Alpha a7S III Mirrorless Digital Camera with 24mm G-Master Lens BundleThe Sony Alpha 7S III features a newly developed 12. 1 megapixel full frame backside illuminated (BSI) Exmor R CMOS sensor that delivers sensitivity, speed and superior images and movie. It takes full advantage of the large pixels and BSI copper wiring structure to more than double the sensitivity and readout speed. The results are astounding, with phenomenal low light capability, up to 15+ stops of dynamic range and drastically reduced noise for