One of the things that has confused me quite a bit during my research of APS-C vs FF cameras has been the debate over whether FF cameras are needed. I literally cannot find a single page or blog post that doesn't say something to the effect of "maybe sensor sizes mattered in the past, they don't now though". On forums, the camps are well-divided: Fuji fans are convinced that their APS-C X-Trans sensor is God's work, and Sony fans scoff at the notion that anything can touch FF. To make it even more confusing, using the DPreview studio tool, Sony FF cameras *as well as the Sony a6000* clearly outresolve the XT-1 at every ISO level. But the images I see out of Fuji cameras are very good, as good as any Sony. Maybe this doesn't matter too much. Is there any way for me to know whether FF will make a difference for me, without just buying one and shooting it?