Fn BUTTON

One of the X100’s very useful features is the Fn button (figure 2.78), which functions as a “wildcard” button in that you can program it to serve many different purposes. If you change your ISO speed frequently or switch between your film simulations often, you can program the Fn button to take you directly to these menu options without needing to navigate through the various camera menus.

Figure 2.78 Fn button
Press the Fn button for three seconds to choose its assignment, or press it quickly to open the assigned menu option (for example, the ISO menu).

You can program the Fn button to have the following functions:

• PREVIEW DEPTH OF FIELD
• SELF-TIMER
• ISO
• IMAGE SIZE
• IMAGE QUALITY
• DYNAMIC RANGE
• FILM SIMULATION
• ND FILTER
• AF MODE
• DYNAMIC RANGE