In article , fcollins@gonix.com says...
(..)
>Although the color of the emulsions varies from manufacturer to
>manufacturer, and even from film to film, they all reflect about
>the same amount of light, which makes OTFP flash metering not
>only possible, but practical and desireable.
(much deleted)

I do find that all color films used with my 8008's and Nikon SB24 TTL
flashes (3 each) are exposed correctly, but for B & W films, I must
dial in "+1 stop" compensation, or halve the ASA setting in order to
get correct TTL exposure.
Hope this helps.