Broncolor Siros S 800 performing HSS with a “mystery trigger.” This might just be first party support, since companies like Profoto just added support for Sony and it’s been rumored that Fujifilm support will follow shortly. There are some convoluted hacks to get high sync working using third party triggers, but I think first parties will release support before 3rd parties officially do, because reverse engineering flash communications is difficult.
Fujifilm GFX 50s sample video footage by DCFever.
Fujifilm GFX 50S rolling shutter clearly shown.
The video is in German, so you will have to use Google subtitle translate, but it has a lot of Canon 5DS R vs Fujifilm GFX 50S comparison shots.
Road tripping the USA – By Damien Lovegrove
RAW Samples (to pixel peep now that there is Adobe Support)
Photographyblog – Had RAW files available, but removed them. Hopefully they will repost them soon.
Fujifilm GFX 50S Sample Images