What Is AE/AF Lock & How to Use It
By Sarah Kingsbury
When you capture an image with your iPhone, the camera's autofocus (AF) and auto exposure (AE) features will automatically determine the best focus position for you and the best exposure for that area of focus. However, you can manually adjust these settings and lock them so that you don't have to reset them between shots. Now, let's find out how to use AE/AF Lock!