The Sony Alpha 7S is a full-frame interchangeable lens camera sporting a 12.2MP CMOS sensor. It is identical in body design to the Sony a7 and Sony a7R, but don't let that fool you. Unlike the other two, the a7S is specially geared toward video and low-light shooters. It's capable of 1080/60p video with full-sensor readout and can turn out uncompressed 4K footage to an external recorder over HDMI. Should serious videographers invest in one? Take a look at our full review.