No, top quality Nikkors were readily available and not too expensive: about $35 then (1973) for the 4/50, though, of course, it was not apo. The Sussman book was full of interesting information but, true, did not delve fully into theory like the British books did and do.

MattKing: for what I do, the sharpness if fully adequate: My argument was more theoretical than practical and the 'suggestion' that was in the book piqued my interest, as we are all looking for sharper and sharper results. It was worth bringing up the topic, if only to cause thinking. - David Lyga