I got a new lens at a car boot sale for £10 -- a CARL ZEISS JENA 24mm f2.8 marked'Made in Japan under licence' - it was as new, no fungus --- it is NOT in the Zeiss lens list here. It is Pentax PK-A-Series fit and I used it with my Pentax LX loaded with outdated 2005 Tudor 100 film rated at 64 ASA.