Looking for some info to help me design an adjustable enlarging table, please. Would anyone know ~ or have a formula for ~ what distance is needed between the negative stage and easel to make prints measuring 24" x 30" and 30" x 40" with a 135mm and 150mm lens for 4x5 format?

Also, anyone have experience regarding comparative sharpness/fall-off at these print sizes for Schneider's Componon S lenses, and their Rodagon counterparts? Haven't found specific magnification info for the Schneiders; Rodagon lists 2x min, 6x opt and 10max magnification. I'm unpracticed reading image fall-off charts, so any first-hand user experience would be helpful ; )

Many thanks in advance to all!

D