I think you may need to see some photos to convince you that Svema LN-9 shall have a filter named after it on Instagram.
LN stands for Lampa Nakalivania (Лампа Накаливания), or tungsten light.
According to my old photo handbook, this Svema had originally sensitivity of GOST 100 (around ISO 100). Went on my balcony to test how time has had traveled for it:
My light meter suggested ISO 25 for this canister. Shot it without “warming” filter, pure light-to-silver, skin-on-skin-and-let-the-love-begin experience.
First field test confirmed no-filter sensitivity:
Then I used an equivalent of Kodak 85B filter only to find unvisioned colors from this emulsion:
Time travel is hard. But Svema helps.