[Frameworks] Tri x reversal super 8

[Scott Dorsey]

> I am not getting it. Is 200 ISO the native speed of the film? Or is it 160 ?

It is both.  The film is less sensitive to red light than to blue light,
so if you expose it in red light, the effective ASA is lower.  If you
are exposing with tungsten light, you use 160 ASA, while if you are exposing
with daylight, you use 200 ASA. 

> Most Super-8 cameras have an orange filter for daylight.
> But for b&w one would always open the filter right?

Right, you disable the 85 filter.  It's a bad idea in any case.
--scott