It is indeed so.
And the given list already includes majority of Aviphot reworks/repackages.
Adox
Takes Aviphot 80, puts some work in it, and boosts pictorial ISO 1 stop, making a great ISO 50 film. Then selling it as HR-50 and Scala 50 for affordable price. I have no problems with this and congratulations for making sweet tech emulsion available for regular shooters.
Meanwhile everyone else on the list (except Ilford and Foma), probably Astrum included, just plain:
- Repackages either Aviphot 80 or 200;
- put their half or fully assed logos on it;
- without putting any additional work into it;
- often charging way higher prices than Adox;
- far too often lying that it's a "completely new emulsion, made for them" and I have some problems with this, but like that tech emulsion is available... I just avoid these resellers whenever possible.
This horse has already been beaten to death more than once, but more info on this practice here:
https://www.photrio.com/forum/threa...-films-and-kentmere-100-and-400-films.196304/
Currently the IR response goes as this, starting with less sensitive: Fomapan R 100 < Ilford SFX 200 < Aviphot derivatives.
If you need Aviphot 200, cheapest iteration usually is Rollei Superpan 200 in bulk, but most expensive - Infrared 400. If Astrum turns out doing the same, then cheapest option would be to buy bulk from Ukraine.
Cute.