Kodak Ektachrome EPP 100

EPP was Kodak's general-purpose professional slide film through the 1990s and into the digital transition. Announced in 1988 as Ektachrome 100 Plus Professional, it ran until Kodak discontinued it in 2009 alongside most of the E-6 catalog. It was the workhorse of the line: more saturated than the neutral EPN, less aggressive than E100SW or the later E100VS, and rated for the broadest commercial use of any Ektachrome that wasn't tungsten-balanced.

The color character sits in a quietly useful middle. Older users describe it variously as slightly warm and slightly cool, which is a polite way of saying it was the stock you reached for when you wanted the scene to look like the scene. Saturation was higher than EPN but stopped well short of Velvia. Skin tones came out pleasing without being flattering in the cosmetic sense. Catalog shooters preferred EPN for that very reason; portrait studios tended to like EPP precisely because it added a small lift.

It was one of the few Ektachromes coated in the full professional format range. EPP ran in 35mm, 120, 220, and sheet sizes from 4x5 through 8x10, which made it a default for large-format commercial studios where you wanted color slide for client review under a loupe. The Ektachrome sequences in David O. Russell's Three Kings in 1999 were shot on custom-coated EPP stock, one of the few film-history footnotes the emulsion has accumulated.

Declining E-6 demand killed it. Production wound down through 2009 and remaining inventory shipped through 2011. Freezer stock is still findable. The dyes are reasonably stable when frozen, less so when shelf-stored.

Reciprocity exponent is 1.10, the standard modern E-6 number. Zone Light Meter applies the correction past one second on the published curve, and the bump stays small at normal long shutter times: a metered 30-second exposure becomes around 35 seconds at the film. Kodak's data sheet for EPP warned of a slight color shift past about ten seconds. The math does not address that shift, only the density. On expired EPP, bracket.