We will have several G-Clarons with us this trip. If the lens boards don't fit your camera we can always mount them on our cameras and your can use your holders to make images. That will give you an idea of longer lenses in 4x5. I am very partial to the G-Claron group. They come in a 150 mm 210 mm 240 mm 270 mm 305 mm and a 355 mm. As David said, they are little and sharp as a tack. But the are slow. They are all f:9's. But don't make any commitments until you see these lenses.