Agfacolor RSX II 50

Agfachrome RSX II 50 was the slow professional in Agfa's late slide lineup, a 1999 reformulation of the original RSX 50 that ran until Agfa-Gevaert exited consumer film in 2005. The II generation tightened the grain and pulled the curve toward neutrality without losing the slide-projection saturation that Agfachrome users specifically bought RSX for. It sat against Velvia 50 and Ektachrome 64 in the slow-slide market.

The character is high color brilliance without the green-leaning push Velvia 50 builds into landscapes. Reds come back rich, blues stay clean, and skin tones land naturally enough that the film actually worked for portrait and editorial slide work, which Velvia never really did. Detail rendering is precise. Agfa marketed it as a documentary stock for architectural and still-life work where neutral color reproduction mattered.

Latitude is narrow, the way any ISO 50 slide film latitude is. A third of a stop of overexposure burns the highlights; underexposure past half a stop blocks shadows. Bracket. Most working shooters metered incident, placed the highlight on zone VII, and let the rest fall. The Zone System and slow Agfachrome were built for the same kind of patient subject matter.

Compared with Velvia 50, RSX II 50 is the more documentary tool. Where Velvia pushes greens toward emerald and reds toward fire-engine, RSX II 50 reproduces both closer to actual saturation. For a landscape that already reads colorful, that is a feature; for a scene you want to amplify, Velvia still wins.

Available historically in 35mm, 120, and 4x5 sheet sizes during the 1999 to 2005 production window, with the sheets particularly rare today. Process is standard E-6.

Reciprocity exponent is 1.10. Zone Light Meter applies the correction past one second, so a metered 30-second exposure becomes about 35 seconds at the negative. For tripod work past a few seconds the math kicks in but stays gentle. Long-exposure color crossover past about a minute is a real risk; bracket aggressively if you push the film that far.