Ilford P4 400 Surveillance? Polypan F? Diafine?

[ncc1701]

Just picked up a 150' roll of P4 off the bay, just expired fer cheap!

Can anyone tell me about this film?
All I am able to find is that it is on a polyester base and cannot be torn by hand.

Any experience with souping in Diafine?


Also, Is this Polypan F stuff any good? 152 meters for 60 bucks! Supposed to be similar to Ilford Pan F.

Thanks for any insight!

 

[astro8]

some info and pics here

 

[MartinP]

The Polypan F is some sort of cine-film for copy negatives, or B+W release-prints or something like that. There is minimal anti-halation backing, it is not fully panchromatic and the speed is probably less than FP4. Some further info, from over at Apug. There is also a thread here somewhere and Petronius, among others, has used it extensively.