I am really enjoying the stock 152mm ektar that is on my 3x4 rb super d, but I am interested in something longer for portraiture. Something like the Graflex Kodak Anastigmat 170mm f4.5 (ideally on a 3x4 lensboard with an automatic aperture), or the 10 inch f5.6 Tele Optar. However, I am open to other lenses too that would work on a 3x4 including barrel lenses. Let me know what you have!