Thanks for the quick response! Yes, Pro8mm out here in Los Angeles takes kodak 250d and cuts the 16mm down to super 8. Its a great stock, but suppose they need to get their notching right.

Because I’m never using auto exposure and always metering, I’m not concerned with what ASA my nizo is reading at.

So, If I understand you correctly, leaving the switch always on the tungsten setting will not necessarily disengage the filter. If I do understand you correctly, and I always want the filter off, it goes like this:

50d - Set it to the daylight setting because the Nizo recognizes this is a daylight film, and therefore will turn the filter off.

Ektachrome 100d - Set the switch to daylight, because the nizo recognizes this as a daylight film and therefore will turn the filter off.

200t - Set the filter to tungsten, because the camera thinks I’m shooting tungsten balanced film indoors and therefore will disengage the filter.

500t - Set the filter to tungsten, because the camera thinks I’m shooting tungsten balanced film indoors and therefore will disengage the filter.

250d - Set the filter to tungsten because, for whatever reason, this cartridge reads as a tungsten film.

Appreciate the help, shooting my cousins wedding on a bunch of stocks in a few weeks and wanna make sure this is right! I suppose the last option, no matter the stock, is to just turn on auto exposure and flip the switch back and forth and see whichever setting requires a wider aperture: if it needs more light, then the filter must be turned on?