I have both an N80 and a F5. I find that for ocean scenes, the N80 locks focus easier than the F5. I bought the F5 a couple of months ago so now I use the N80 as my backup camera. I like the focus selector on the N80 better than the F5 and the N80's viewfinder grid is nice as well, but I found the N80 to be a bit small (I have the battery pack for it, so it isn't too bad). The F5 is in a totally different league; it is much bigger and heavier.