Fujifilm Provia 400F

Provia 400F was Fuji's second-generation fast slide film, launched around 2001 to replace the original Provia 400. The catalog code was RHP III, which is the part of the box you check when you find a sleeve in a darkroom drawer. Fuji discontinued the 400F around 2007 to make room for Provia 400X, the third-generation Epitaxial Sigma Crystal stock that pushed grain finer still.

What 400F brought to the table was an RMS granularity of 13, down from the 15 of the original Provia 400. That sounds incremental, and on a 35mm light table it is. On 120 the difference shows up cleanly, particularly in mid-tone gradients where the older 400 looked clumpy. Provia 400X eventually reached RMS 11 and made the 400F look coarser in retrospect, but during its run the 400F was the cleanest fast E-6 film on the market alongside Ektachrome 400X.

Color balance was Fuji-typical: cleaner blues than Velvia, restrained reds, neutral skin tones that did not push warm the way Ektachrome did. Wedding shooters under tungsten loaded it for reception coverage because the slide could be projected without correction. Pushed one stop to 800 the grain went noisy but the color held. Pushed two stops the shadows blocked.

Latitude was tight by negative-film standards but generous for a slide film. A third of a stop over and the highlights started clipping. Bracket if the meter reading is at all uncertain.

Available in 35mm and 120 during its run. There was never a sheet film version; Provia 100F was the only Provia stock that shipped in 4x5 and 8x10. Expired stock from 2005 to 2007 is still circulating, with predictable E-6 color shifts on anything not freezer-kept.

Reciprocity exponent is 1.10. Zone Light Meter applies the correction past one second. A metered 30-second exposure becomes about 35 seconds at the film, a small enough nudge that most working photographers never had to think about it past the threshold itself.