>>4256936Anon, I dont want to alarm you, but that Phoenix film is literally Svema DS-4 judging by it's spectral response
Picrel screenshot from Harman datasheet over DS-4's spectrogram:
Link to datasheet:
https://ru.scribd.com/document/688693527/Harman-Phoenix-200-Film#fullscreen&from_embedLink to Svema DS-4 spectrogram:
https://avatars.dzeninfra.ru/get-zen_doc/1528313/pub_60c55715b582164697809cde_60ce695592badd3b0fa72f35/scale_1200