I also have a hard time visualizing in b&w, but I've done a lot less of it. I did try the #90 filter, but haven't found that it helps much, maybe I'm not understanding how to use it. Colors still come through, so it doesn't totally render light brown.

I know this thread started on color visualization, but if anyone can recommend anything for b&w, I'd appreciate it. Maybe just years of practice .

-jbl