DSLRs can shoot amazing quality video. But their autofocus is primarily designed for shooting stills and can result in stuttering movie footage, which is why most filmmakers don't use it. However, Canon thinks this could change with the launch of the EOS 70D. The new AF system in the Wi-Fi-toting 20.2-megapixel DSLR is said to offer much faster focusing during Live View, to the point that it can shoot almost camcorder-rivaling video.
Read the full article: Canon EOS 70D features "dramatically improved" video-friendly focusing