I guess I think that black and white when you´re shooting digital just works better at higher than 100 iso. If I know I´m shooting for black and white, I try and shoot iso 400 or 800 to get the grain simulation. I haven´t really ever had an issue where my camera didn´t give me the file I needed for black and white. Normally it´s me not properly using the light or processing the file...
This was processed in cs3 via acr.
I warmed up the color temp, dropped saturation ever so slightly.
I then opened up the file, and desaturated the file by half by using the channel mixer and putting the blue and green channels at zero while raising the red to 90.
then made a copy of that file, did a duotone
that duotone was then copied on top of the rgb, opacity set to 90%
reset the levels-curves properly and then did the final channel mixing like before more or less but this time opacity was set to 98% before flattening to leave a slight touch of color...
this has nothing to do with his way of working black and white, someone had just asked for examples of people´s processing...