I ran a quick test between the two cameras. Each set at ISO100 and f8. Please excuse the difference in focal length. The focal point for each shot was exactly the same, the centre of the picture. I've taken only the centre third of each to compare. Quite a difference. No sharpening involved, just a bit of a tweak in the shadows. Considering the high esteem the Fuji sensor and fix lens combination are held, the Sigma combination is quite frankly mind blowing. all those who are considering this Sigma unit will hopefully find their way here and be able to see for themselves.