[cmacd123]

Hello:
I'm developing a plugin for Photoshop,

In the context of APUG, Photoshop is a retail establishment where one can buy Film and other Photo Supplies. The owner does not like anyone plugging things in without permission..

where can I get the rolls of film for my SRL like, Kodak Vision 250D, 500T, etc..

The Kodak Vison series like the soon to be discontinued Fuji Eterna series are Motion Picture Negative films for the ECN-2 Process. If you only need a few hundred feet of any of them, you can probably get them from a dealer in "short ends" - film that Motion picture camera operators have left over after a shot, that are removed from the camera as they are too short for the next planned shot.

You can use a bulk loader to place the film in a cassette for your SLR. Processing is tricky as all of the films in that class have the dreaded "remJet" backing. which is removed by the motion picture processing machine. Search ECN on the forum for endless discussion on the ins and outs of ECN