Canon has announced two new PowerShot G-Series point-and-shoot cameras, the G7 X III and G5 X Mark II. The cameras are successors to the PowerShot G7 X II and PowerShot G5 X, respectively. Both cameras feature 20-megapixel 1-inch stacked CMOS sensors backed by DIGIC 8 image processors. They can shoot at up to 20fps with a maximum ISO of 12,800. For video recording, both cameras can capture 4K/30p, 1080/60p (and 120p), HDR, and high frame rate movie with no crop.…