With a better autofocus system, Sony's follow up to its A7R II flagship full-frame mirrorless keeps the stellar photo and video quality but makes it easier to get.

The Sony A7R IV is turning heads with its 61-megapixel full-frame sensor. But just how much has it improved over its predecessor, and do you really need it? Here's how the two models compare.

Sony’s latest A7 cameras represent the vanguard of the mirrorless camera movement because they’re the most accessible full-frame systems on the market. The A7 III and A7R III are smaller ...