The GFX line of medium format mirrorless cameras was announced at Photokina 2016 with the initial 50S model. In 2018, Fujifilm introduced a second model, the 50R.
These cameras use what we call the small medium format sensor from Sony (about a .79x crop from 35mm film, or full frame). They also are Bayer sensors, not Fujifilm's own X-Trans.
