The WA Process Nikkors are unbelievably sharp. They are expensive to put into shutters but are supposedly sharpest in the barrel. If you can live with F32 you are in business. I've tested the 240mm and recently(last week) bought the 260mm and 360mm versions which are about to go on my new Wisner 7x17 and 12x20. Try the one you have out and see for yourself. Good luck.