I just have to ask the question - why does anyone really care if the lens is a t essar design, triplet design etc.? I have used a number of lenses over a nearl y 40 year time period and haven't given the actual lens design any thought.
Since I have no control over the design chosen by the lens designer/manufacturer - what result should I expect to get from a different type of lens design? At the moment, I use two Rodenstock Sironar-S lenses, one Rodenstock Grandagon, and a Schneider XL series (oh, and one really old Schneider convertible). I look f or circle of illumination, MTF, and contrast.
What am I missing? Is looking for a certain lens design important - or is it li ke putting a lead brick on my stereo amp to "damp out microphonics"? (Or, should I only use electricity generated from a hydroelectric plant because it's "clean er sounding" than that from a nuclear plant?) You get the idea - am I looking a t a lens design or the end result (photo)?