If you shoot in fully automatic mode, you have no knowledge of these settings - the camera makes these decisions for you. But as far as portrait photography tips are concerned, one of the best is that you need to control your exposure settings to get the best results. Autofocus mode is ideal for situations where you are photographing a person in motion. Here you will find everything you need for professional filming. https://www.photographytalk.com/contest-articles/8350-best-camera-settings-for-portrait-photography