3D image tracking - The camera and lens working together.
Female northern harrier photographed using 3D image tracking and continuous focusing. A camera may have 3D image tracking, but that doesn't mean it can do a good job. There are many aspects to tracking an image. Here are some of the issues to consider: How fast is the subject moving? Is the subject erratic in its movements? You can often alter the refresh rate of your continuous focusing in menus, making it longer or shorter depending on various factors. I keep mine as short as possible. Is there empty space before the subject? How about behind? Many tracking functions have a problem with clutter, especially if the subject is partly concealed by it. What model of camera do you have? Newer/higher-end models will have faster processors and therefore can apply focusing algorithms that much faster than other cameras. Although I have fairly good equipment, it is not the best, and I know many of my shots could be better i...