Buster6X6 said:
I have Kodak Ektanon 161/ f4.5 enlarging lens which performs pretty good ( I have nothing to compare it with).
If I recall correctly they were acceptable but never great in their day. The 161mm is, I think, an extended triplett, perhaps even a Tessar (not sure). In the Kodak lineup they were the "budget" glass. The Ektars were, by contrast, among the best of their day but from today's perspective really half-a-century old state of the art--- and the art really has advanced since the war, especially since computers became widespread and economical. The Rodagons, compared to the Ektars, are better corrected, coated and represent a very different state of the technical lensmaking. If you are looking for "sharpeness" and contrast then you might want--- especially given the current market prices--- to pick up a Rodagon 150mm (or even the 135mm).
Make a difference? I think so..