Using Tri-X the difference in sharpness between the different formats is substantial. Since we do not have to enlarge much when using the large format, we can make use of the Tri-X when it is at its best, at low line frequencies. With the smaller formats we end up among the high line frequencies and low MTF values. The difference is most apparent at wide apertures. The 35 mm negative is not able to reproduce the finer details of the subject.
Medium format is much better, and large format is the best.
This is how we imagined that the difference between the formats would be. If we then look at what happens if we put T-Max 100 in the camera we are in for a surprise. The difference in resolution is not that great. With the lenses stopped down for an increased depth of field there is hardly any difference at all, and that is with the advantage of shutter speed that is a whole four steps shorter with the 35 mm. With a wider aperture the difference is greater, but it is still only marginal.