On the primacy of exposure

I meant exactly what I said. The exposure settings used to take the photos were 10.5EV, 13.3EV, 14EV (two at that setting), 15EV and 15.6EV. EV referes to log2 f-number^2 times shutter speed, so for instance 10.5EV could be f/2 at 1/360 or f/4 at 1/90 and so on. With the same light the same EV gives the same exposure. 1 EV different is 1 stop different.