Sony a7R III promises faster bursts, better focusing and longer battery life

Sony has announced the a7R Mark III, a 42.4MP mirrorless camera built around the lessons learned from its flagship a9 sports camera. The result is a high-res full frame camera capable of 10 fps shooting with more tenacious autofocus and many of the improvements existing a7R II users had hoped for. The camera features essentially the same body as the a7R II, but Sony has found room for a focus point selection joystick, AF-On button, twin SD card slots, flash sync socket and, most importantly, the...