I'm waiting for my new Kodak Portrait 305mm f4.8 to arrive for the 8x10 (woohoo, thought I'd just throw that in), and in the meantime I was fooling around with the 4x5. I have an old brass f6 Rapid Rectilinear that I have really never used, and I was wondering if there were any thoughts from you experts about using the RR for portraits. I'm going to just try it of course, but I wonder if there are opinions out there.