While Fuji no doubt has a great range of lenses, and it certainly has some high-quality Primes, there are a couple of holes in its lineup still, in my opinion. There is one lens, that is very popular on some other systems, and it’s the lens I miss the most from when I had it for my Canon 5d. For me, it’s the ideal walk around focal length, and that is a 24-105mm equivalent. For a Fuji X-series system, that would be a 16-70mm.