IQ comparison between the Fuji GFX100 and Sony A7rIII
If you are curious to learn how well the new Sony 102MP medium format sensor works on the Fuji GFX100 check out the comparison posted by Imaging Resource.
This for example is a cropped image comparison at ISO100:
And here is the ISO 12.800 comparison:
Of course the Fuji is sharper. But whether this difference can justify the $7,000 price difference is up to you to judge :)