A general discussion is welcome. In particular, I'm also interested in suggestions for M42- and F-mounts (because I happen to have a Pentax Spotmatic SP II and Nikon N75).
I'm curious to know of any suggestions for seeking out lenses exclusively for shooting with 400TX. The following comment got me thinking.
I sense a preference for character or emotion over technical perfection -- unless I am misinterpreting -- which I easily relate to. What other options are worth considering? Can words describe the effect of using old lenses, or at least old lens designs, as Jepsen stated?
I'm surprised, because a mid-century (aka 1950s) Summicron is going to be sharp, but relatively lower contrast to later lenses from Leica as well as most other manufacturers.
I have shot Tri-X in it's various incarnations (it's changed over history) in every format from 35mm to 4x5. Since you asked about F mount lenses, my favorites in this family are (note that I only shoot monochrome film, I've no idea how these do with color):
20mm f/2.8 AIS
24mm f/2.8 AIS (mine is in AI, but I don't think it much matters)
35mm f/1.4 AIS
85mm f/1.5 AIS
105mm f/2.5 AIS
180mm f/2.8 Nikkor-P (I'm sure the newer AI and AIS variants are all great too)
I think you find all of these sharp and contrasty when you used appropriately.
I don't think brand alone makes that much difference. The specific lenses within a brand do, but that's got pretty much nothing to do with Tri-X specifically. The Nikkor 43-86mm zoom is a piece of garbage on any kind of film. But, the lenses listed above are great on every film I have ever tried. Similarly, I'm not fond of older Leica optics because I find them too low contrast for my tastes. But everything I've tried of theirs from the 1970s onward has been superb in my experience, irrespective of film. Even the older LTM Color-Skopars do a shockingly good job.
In any case, I am not sure what "qualities of glass" or "optical character" even mean. Is it sharpness? Contrast? Bokeh? With modern optics from Nikon (or Leica, or Canon, or ...) there may be some lenses that are better in these regards than others, but overall, they are all going to be terrific. My experience is that the "look" of Tri-X you get has a lot more to do with how the film is processed and the developer used than the lens (noting that things like edge-to-edge sharpness and bokeh do play a role).
I think this often gets overworked as a concern. I know people who will go on and on (and on and on and on ...) about how their Voigtlander in an F mount is the sharpest lens ever made and will be happy to demostrate this on a 40 Mpix digisnapper shooting something across the street. But when you look at their actual pictures, they are boring beyond words. Your vision and execution matter more than anything else.