Arista Pro 50 = Ilford Pan F+ Arista Pro 125 = Ilford FP4+ Arista Pro 400 = Ilford HP5+ Arista DMAX 400 = Ilford Delta 400 Have you tried the excellent Legacy Pro from Freestyle? It's repackaged Neopan 400. Fantastic film. Kiron Kid In a message dated 1/20/2010 7:13:30 PM Pacific Standard Time, dlp4777@xxxxxxxxxxxxx writes: Does anyone here know for sure if this film is Tri-x? Thanks. Janet Kiron Kid "A photograph that mirrors reality, cannot compare to one that reflects the spirit"