Canon's new EOS M3  mirrorless camera is coming to the US in October. It features a 24-megapixel APS-C-sized CMOS sensor and a DIGIC 6 processor and delivers a native ISO range of 100-12,800 that’s expandable to 25,600. It records 1920x1080p30 video with a maximum bit rate of 24Mbps. Price: …