What does the fn of the camera mean?

The FN key is a shortcut key on the camera that can help photographers quickly adjust some camera settings. For example, some common shortcut settings on cameras include ISO, white balance, flash, focus mode, etc. Through the FN key, photographers can quickly make adjustments in different shooting environments to obtain better photo effects.

In addition to quick settings, the FN key on some cameras can also be used for custom functions. This kind of function usually requires photographers to set it up according to their own shooting needs, such as binding a commonly used menu item or quickly switching between different shooting modes. By customizing the FN key, photographers can shoot more conveniently and improve work efficiency.

Different brands and models of cameras have different functions and settings of the FN key. For example, the FN key on some Sony cameras can also be used to adjust EV compensation, fine-tuning focus, white balance and other functions, while some Kodak cameras can use the FN key to preview depth of field, display histograms and other operations. Therefore, when buying a camera, it is very important for photographers to understand the camera's FN key settings.