I've been fortunate enough to get my hands on a quite a bit of Kodak Technical Pan even though it has been discontinued, and I've gotten excellent results shooting it in sunny as well as slightly overcast conditions, rated at either ISO 25 or 50. What other film, rated ISO 25, shot handheld at 1/125 sec. and F5.6 from the top of the Empire State Building could give you a tack sharp 20 x 24 print of the East Side of Manhattan?? I've heard that this film can be rated up to either 200 or 320. Is this true? Is there anyone who has gotten good results shooting it above ISO 50?