Electronic First Curtain (EFC) and Electronic Shutter (ES)?

[Michael Erlewine]

Do we know yet whether the GFX has an Electronic First Curtain (EFC) and an Electronic Shutter (ES)?

[algrove]

Based on the menu items shown in the Fujiguys video on the GFX yes to both.

[kangmlee]

Shutter The World's First Focal-Plane Shutter* Specifically Designed for Medium Format Mirrorless Cameras

The newly-developed focal-plane shutter is the world's first specifically designed for medium format mirrorless cameras. It is a low-noise mechanical shutter that withstands 150,000 actuations**, offers shutter speeds up to 1/4000 sec and has an electronic first curtain. Choose from three shutter types, including an electronic shutter.

  Mechanical Shutter 4sec. to 1/4000sec. (P Mode), 60min. to 1/4000sec. (All Modes) 

Bulb mode (up to 60min.), TIME: 60min. to 1/4000sec. Electronic Front Curtain Shutter*** 4sec. to 1/4000sec. (P Mode), 60min. to 1/4000sec. (All Modes) 

Bulb Mode (up to 60min.), TIME: 60min. to 1/4000sec. Electronic Shutter 4sec. to 1/16000sec. (P Mode), 60min. to 1/16000sec. (All Modes) 

Bulb Mode (up to 60min.), TIME: 60min. to 1/16000sec. Mechanical + Electronic Shutter 4sec. to 1/16000sec. (P Mode), 60min. to 1/16000sec. (All Modes) 

Bulb Mode (up to 60min.), TIME: 60min. to 1/16000sec. Electronic Front Curtain Shutter + Electronic Shutter*** 4 sec. to 1/16000sec. (P Mode), 60min. to 1/16000sec. (All Modes) 

Bulb Mode (up to 60min.), TIME: 60min. to 1/16000sec.

[algrove]

That says it all.