From: Roger S. on
Good point Rob, the orange mask is a huge difference. I haven't
scanned enough silver B&W to comment on scanning as reversal and the
inversion beyond that Photoshop seems to be able to do it okay, but
the tonal distribution requires big corrections in the next stage
which can be avoided by scanning as input type B&W negative and film
type "color negative."

I found this manual useful for manually correcting and inverting color
negatives- I have Vuescan do the inversion myself but there are other
ways, both automated (colorneg) and manually in Photoshop (below):
http://www.scanhancer.com/uploads/downloads/scanhancer_manual.pdf