Understanding AF: How Cameras Automatically Adjust Focus

AF stands for "Automatic Focus". It is a feature in some cameras that allows the camera to automatically adjust the focus of the image based on the subject being photographed.

In other words, AF helps the camera to determine which part of the image should be in sharp focus and adjusts the lens accordingly. This can be especially useful when taking photos of moving subjects or when the camera is not able to be manually focused.

There are different types of AF systems available in cameras, such as:

* Single-shot AF: This method uses a single sensor to detect the subject and focus on it.
* Continuous AF: This method continuously tracks the subject and adjusts the focus as the subject moves.
* Phase-detection AF: This method uses a separate phase-detection sensor to measure the distance between the camera and the subject, allowing for faster and more accurate focusing.

Overall, AF is an important feature in cameras that can help to ensure sharp and clear images, especially when photographing moving subjects or in low-light conditions.