![]() And if you need a top-notch autofocus system, more cross-type points is the way to go. That’s why cross-type AF points are generally better than standard AF points. While standard AF points only observe the scene along one axis (vertical or horizontal), cross-type AF points search observe the scene along both axes–which makes them much more adept at acquiring focus. You’ll often hear camera manufacturers bragging about the number of cross-type AF points, because these are the faster, better option for acquiring focus. Standard AF points and cross-type AF points. Now, one type of AF point system, known as phase-detection AF, offers two different types of AF points: They observe part of the scene, then seek to bring that part of the scene into focus. When you press your shutter button halfway down, the active points engage. Types of Focus Points: Standard Versus Cross-TypeĪutofocus points work by observing part of the scene, then making deductions about whether that area is in focus. If you look at today’s autofocus systems, you’ll see a spread of point counts, from around a dozen on the low end, to hundreds on the high end.Ī key factor here is whether the camera uses an on-sensor autofocus system or a separate autofocus system while the difference between these two systems is beyond the scope of this article, know that current separate autofocus systems are much more limited in terms of point counts, whereas on-sensor systems can offer hundreds and hundreds of points. More focus points are pretty much always better, which is why camera focus point counts are continuously increasing. The number of focus points offered by a camera depends on the specific model. Active focus points are used by the camera to acquire focus, whereas inactive focus points lie dormant (but can be activated by changing the AF area mode, as discussed in a later section). Note that focus points can either be active or inactive. Whereas if you have a single active focus point in the corner of the frame, your camera will focus on the part of the scene in the corner of the frame. If you have a single active focus point in the center of the frame, your camera will focus on the part of the scene in the center of the frame (i.e., the area that sits “under” the focus point). They’re basically little dots that exist all around the frame. Understanding Camera Focus Points: Conclusionįocus points are what your camera uses to focus.Shooting Moving Subjects: AF Tracking Modes.Shooting Still Subjects: The Focus and Recompose Method.AF Area Modes and Autofocus Modes: Putting It All Together.Types of Focus Points: Standard Versus Cross-Type.How Many Focus Points Do Cameras Offer?. ![]()
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