Posted 24 May 2005 - 03:25 PM
There are a lot of differences between C-41 and ECN-2 not only in process, which John alludes to in his post, but also in intended applicaiton. For a long time, there has been a divergence in the needs of still and motion photographers. Flashbulbs and later electronic flash are different color temperatures than the tungsten lights that are favored by cinematographers, so even amongst a single film manufacturer such as Kodak, your still and cine films are going to be drastically different since they are designed for exposure with different light sources. I have seen ECN-2 that is custom processed in C-41 chemistry and the colors just weren't right on the subsequent prints. Also, if you were to compare the results from a still to a cine film, it would be difficult unless you were using daylight-balanced movie film. Kodak's fastest tungsten-balanced still flim is only ASA 100. Perhaps you should consider the possibility of spooling short lengths of cine film into cassettes for use in a 35mm SLR. It is more difficult to get processing now that RGB Labs has closed down, but I'm sure there are a few labs that'd help you out with doing tests if you told them that you would consider using them to process the footage you shoot for the film itself.