The roles played by each of the function buttons can be selected by pressing and holding the button. The default options are shown below:
[Fn1]/[AE] button (Photometry)
[Fn2]/[AUTO] button (Auto mode on/off)
[Fn3] button (AF mode)
[Fn4] button (Film simulation)
[Fn5] button (Flash mode)
[Fn6] button (Focus-frame selection)
[Fn7]/[Fn] button (Movie recording)