Agfachrome 1000 RS

Agfachrome 1000 RS arrived in 1985 as Agfa's answer to a problem photojournalists kept hitting: most E-6 slide films stalled at ISO 400, and stage, indoor sports, and concert work needed at least a stop more. The 1000 RS sat at the top of Agfa's professional reversal range, alongside the slower 50, 100, and 200. The RS designation stood for Reversal System, the E-6 compatible professional line.

The grain was the obvious cost of the speed. Cluster size was visibly larger than Ektachrome P800/1600 in side-by-side tests run by European photo magazines in the late eighties, though some shooters found the Agfa grain pattern more organic looking. Color saturation was tuned down compared to consumer Agfachrome. Skin tones under tungsten ran warm but not orange. Mixed-light interiors held together better than Fujichrome 1600 at the same speed.

The film shipped in 35mm and 120. Stage and concert work was the obvious application, and it picked up users in indoor sports through the early nineties before Portra 800 ate that market. Compared to Ektachrome P1600 pushed two stops to 1600, the 1000 RS at box speed delivered cleaner shadows and less crossover under tungsten.

Agfa discontinued the 1000 RS around 1995, well before the broader slide-film exit. The slower RS and RSX speeds carried on for another decade, but the high-speed reversal market collapsed first as photojournalists shifted to fast color negative and then to early digital. The replacement that briefly carried the speed-class banner was Agfachrome RSXII, but that emulsion topped out at ISO 200. Any 1000 RS in circulation now is 1990s freezer-stock, with high-speed dye couplers that age faster than slower emulsions.

Reciprocity exponent is 1.10. Zone Light Meter applies the correction past one second on the standard curve. A 30-second metered reading runs to about 35 seconds at the negative, a forgiving curve for what was a sensitive emulsion. At base ISO 1000 the threshold rarely comes up in indoor reportage. For freezer-stock you are usually rating it down a stop anyway, which puts the math back in fresh ISO 400 territory.