The firmware update Ver.1.20 from ver.1.10 incorporates the following issue:

• Addition of the function for TELE CONVERSION LENS TCL-X1001. Change of shooting menu

  Current : WIDE CONVERSION LENS > ON / OFF
  New : CONVERSION LENS >WIDE / TELE / OFF2. When „TELE“ is selected in the „CONVERSION LENS“ menu, the size of the Bright frame in the Optical Viewfinder will switch to shooting area for the TELE CONVERSION LENS…..

See on www.fujifilm.com

Firmware Update FujiX100s