TYPES OF FOCUSES ON DSLR CAMERA - WHICH TO CHOOSE AND WHAT FOR?

Do you often take photos of moving objects like animals, children on sport? Are your photos often blurry? Is your focus setting on your DSLR camera correct? Let’s have a look. :)
 

Every DSLR or better compact camera has more possibilities of setting focus type. Most frequently we can encounter 3 types of focuses.
 
 
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AF-A (auto focus)
 
AF-A stands for Auto Focus - Automatic. It means that the camera choses itself where to focus and tries to choose focusing points according to current situation where you point your lens. Mostly this type of focus is absolutely useless as your camera has no clue whether you are trying to take a photo of a dog, the tree behind him or the whole panorama. It will, according to contrast and distance between object and lens, “randomly” choose spots to focus on. I recommend to not use Auto Focus.
 
AF-S (single shot focus)
 
AF-S stands for Auto Focus - Single Shot (Canon calls it One Shot). This type of focus is suitable for taking photos of immobile objects such as panorama, architecture or night sky array. This focus type can be triggered by pressing the shot button into the half, camera focuses once, makes a sound and then you can expose your photo.
 
AF-C (continuous focus)
 
AF-C stands for Auto Focus - Continuous (Canon calls it Al Servo). This type of focus is used for taking photos of mobile objects. When pressing the shot button into the half, camera continuously focuses according to the object’s movement. Even when in burst mode, the camera will re-focus before taking each photo. 
 
AF-M (manual focus)
 
AF-M stands for Auto Focus - Manual. Manual focus can be used in certain situations, where camera due to light conditions or colour of the scene is unable to focus automatically. I often use it while photographing night sky, moon or animals that have dark or completely white fur and the camera that automatically focuses on colour transition has no chances of focusing.
 
Manual selection of focus points
 
To perform manual focus, it is important to set the selection of focus points to manual. It means to choose manual selection of focus point and before every exposition of the photo select a focus point on the right of the display that suits you for the correct photo composition. Thanks to that you can prevent cases, where during automated selection of focus points, the camera would focus on the tree behind dog or a flower instead of bee etc.
 
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