I went out today with my RB67 and took photographs of the snow using a Sekonic incident meter. I set an exposure at EV14 and exposed it at EV12 in order to get white snow. However, I am now wondering if I overexposed it. Is it necessary to compensate in order to avoid 18% grey snow with an incident meter or not? If the negatives are indeed overexposed, I would of course need to compensate in the development. The film is FP4+ and the developer is D-76. Any suggestions?