NX5 sensitivity spec
 

I've spent the last hour Googling for the sensitivity specs on the NX5. Many professional cameras list it (i.e. Sensitivity: f11 at 2000 lx, 89.9% reflectance) but I can't find it anywhere for the NX5. Basically, I'm trying to figure out how many Lux it takes to make 100% video at f4 at 59.94i with 0db (or -3db) gain on an 89.9% reflectance chart. I suppose I could throw up some lights and figure it out myself, but surely the spec is available somewhere.