Blackmagic Camera is one of the more powerful third-party smartphone camera apps available and it's now even more useful for solo creators. Blackmagic Design just announced that the latest iOS version 3.3 now supports Apple Watch, letting you control the app and monitor video remotely from your wrist. It also includes ATEM camera control so you can use your iPhone as a live studio camera.  With the new Camera Apple Watch companion app, you can remotely control and monitor your iPhone from anywhere within Wi-Fi range. It lets you start and stop recording, control zoom and adjust settings like frame rate, shutter speed (angle), white balance and ISO with a tap. You can also see a view of your video for framing control, though a Watch screen is probably a bit too small to accurately check focus.  The Watch app will benefit solo creators who want to mount their iPhone on a tripod to record standup or vlogging activities.…