Ilford XP2 Super 400

XP2 Super is a chromogenic film, meaning it forms dye clouds in C-41 chemistry rather than silver grains. The result looks like a conventional B&W negative when printed or scanned, but the underlying structure is closer to color negative film than to HP5+. Any C-41 line can process it, which is the main practical appeal: in any town with a one-hour lab, you can get your B&W negative back the same day without hunting for a specialist.

The scanning characteristics are genuinely different from silver-based stocks. The dye grain structure scans with higher apparent sharpness and less noise at ISO 400 than HP5+ at the same speed. Labs sometimes auto-correct XP2 toward warm tones in their default scan profiles; requesting a flat neutral scan and handling the tone curve yourself produces a cleaner result.

Latitude is the other reason photographers choose XP2. Usable exposures range from around ISO 50 to 800 on a single roll, and the film compresses highlights graciously. Shooting a mix of interior shadow and bright window on the same roll in C-41 development is viable in a way it is not with conventional silver B&W developed normally. Fashion photographers and event shooters who need a fast turnaround without setting up their own lab have relied on this since the XP1 days.

XP2 does not push well past 800. It is designed for wide-latitude exposure, not speed extraction. Trying to push to 1600 in standard C-41 development gives thin, muddy shadows.

Reciprocity exponent is 1.31. Long exposures correct the same way as HP5+ or SFX. Zone Light Meter applies the standard correction past one second. The chromogenic structure does not change the reciprocity behavior in any meaningful way, so the same curve applies.