Now that I have a Gundlach 4X5 Korona type wooden field camera with about 500mm of bellows (thanks Richard!) I will have no problem focusing the 300mm Xenar for portraits. Don't plan on taking it out too much since I have the Toyo but I am planning on finding a nice older lens for the Gundlach, to match for asthetics. I guess something in the 135mm range. Maybe a Dagor in an old compound shutter.