Fujifilm released a video explaining the Fujifilm GFX Large Sensor. Below is a summary of the above video:
Since the beginning of photography, various media types were used to capture the still image
Sheet film is one of the first and it is still around today
When 35mm was introduced about 100 years ago it was called miniature because they preferred sheet, 120, 220, 127, etc… these were called medium format since they fell between
In today’s world, we largely do not have access to sensors that large so GFX should be considered large format today because it is bigger than 35mm and that is the standard size now
Digital cameras in the GFX range can be called medium or large format since they are larger than 35mm
The sensor on the GFX is 43x33mm with an image circle of 55mm diagonal
GFX is 70% larger than 35mm full-frame or 1441mm squared
You can put a lot more high-quality pixels that are bigger and better on the GFX format
GFX100 is a fast large format camera that nothing competes with
210MB RAW files at 5 shots a second is unheard of before