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"RE: Thansk everyone for your input! (nt)"
Just a simple correction about guide numbers.The SB-50DX has a GN number of 72 at 35mm and the built in flash of the N80 has a GN max of 39. So adding both GN numbers equals 82GN.If you look at the specs of the Sb-50DX, it shows that the GN number at 50mm is 85GN so if you add the GN of the N80 it goes up to 93GN.Calculating the GN of two or more speedlight goes like this:Square root of ((GN of first speedlight)^2 + (GN of second speed light)^2).^ means square of.Frank