Fujifilm Kit Zoom or Primes

I wanted to see what if any sharpness differences there are between the Fujifilm 18-55 kit lens and the 18mm 33mm Fujifilm and 56mm Sigma prime lenses. As ever it's not a technical review but more of a real world comparison.  @cameralabs  and  @christopherfrost  do brilliant technical reviews if you're interested in that type of thing.