Downsized image of 6x6 neg, full frame.

Is there any highlight detail in the original negative?

Highlight detail? Not a lot. I overexposed it, looking for detail in the darker edge of the threads and the stuck out metal bits that are in the detail JPEG. Since I didn't shoot 12 shots that were as contrasty as this, I didn't do anything special with my processing time, which kind of blew out the highlights. In terms of the Frontier scanner capturing lots of data, it'll never do as well as a manual enlargement with lots of careful dodging and burning.