tri-x is not a very sharp film. it's commercial release was in 1954. for it's time it was a breakthrough -- a 400 speed film, when most films were 125 and color was 6/12. the best thing about tri-x is that it has great response to different developers, specifically compensating developers. rodinal comes to mind -- the compensation effect will enhance acutance, but sharpness still remains pretty mediocre. the grain structure "is" what 35mm film was all about, all until tab grained films such as tmax and delta were developed.
for sharpness with a fine lens such as the 45 planar or a leica asph you should really be shooting a t-grained film. that said, if you don't like the look of the grain (i'm ok with it for scenics/street, people though i prefer tri-x) don't shoot it.
for sharpness with a fine lens such as the 45 planar or a leica asph you should really be shooting a t-grained film. that said, if you don't like the look of the grain (i'm ok with it for scenics/street, people though i prefer tri-x) don't shoot it.