85 filters

Having recently been in pursuit of some Kodak Series filters, I'm noticed that the various 85 filters seem to have been very common. The standard use for these is supposed to color correct tungsten film for daylight, but it is hard to believe that that many folks had rolls of interior film that they wanted to use outside.

As there filters are an orangish shade (but not a bright orange) I was wondering if these were commonly used with black and white film as an alternative to a yellow filter. Has anyone done this and are there any advantages to it?

Back in the day both 81 and 85 filters were used. It shouldn't be hard to believe at all. That's why there are so many on the used market.

I also dont recall anyone who wouldn't use a yellow filter when a yellow filter was needed or desired.

Any other use of CC filters is experimental rather than standard practice. So experiment and find out if it meets your needs. But in general I recall most folks using filters for their intended applications and within their design specification.

Tungsten balanced slide film sold reasonably well, especially before electronic flashes became commonplace.

85 filters are still used in cinematography with film such as Kodak Vision3 200T.
Tungsten light - E.I. 200
Daylight - E.I. 125 with the 85 filter

Yes, most professional cinema film sold was tungsten balanced. So there are a lot of 85's out there. I've always wondered how they would render when used with B&W. When you try it, tell us how it worked out!