....
Which leads me to a question. What might I be missing by not using any special B&W software or plugin? A digital photo is just an array of numbers, one triad for each pixel. All post processing software implements a collection of adjustments in its user interface which map pixel triads into other triads to make a new adjusted array. And each software has a collection of tools which enable the user to limit an adjustment to just some of the pixels. Lightroom has a large collection of adjustments and tools, which would seem to cover nearly all possible useful mappings. However, many of you employ plugins like Silver Efex, DXO Film Pack, Topaz Black and White, etc. Why? What are the specific useful mappings/tools that are impossible to adequately approximate using Lightroom's many adjustments/tools, singly or in combinations? Or is it a matter of perceived convenience, or a matter of "XXX company certifies that their YYY adjustments/tools make my images look just like the results from ZZZ-film"?
--- Mike