Ilford XP2 400 (original)

The original XP2 arrived in 1991 as the successor to XP1, Ilford's first chromogenic black and white film from 1981. Like XP1 before it and XP2 Super after, the film developed in standard C-41 color chemistry but produced a panchromatic monochrome negative through dye couplers rather than silver grain. The selling point was that any one-hour lab in any shopping mall could process it on the same line that ran Kodak Gold and Fuji Superia.

XP1 had failed commercially because labs hated the non-standard C-41 development time it required, and most managers refused to push process it. XP2 fixed that. The 1991 reformulation ran on the genuine C-41 cycle without time adjustments, which let Ilford sell it through any drugstore counter rather than only specialty shops. That was the business case.

Compared with XP1, the XP2 grain was finer and the curve more linear. Compared with HP5 Plus shot at 400 and developed in ID-11, the XP2 grain was visibly tighter at all enlargement sizes, the perverse property of chromogenic black and white film. The dye-cloud structure scales differently than silver grain. Highlights were clean, mid-tones long, and shadows held detail well at box speed but blocked harder than HP5 Plus if you underexposed. Most XP2 shooters rated it at 320 to give the shadows half a stop of cushion.

XP2 Plus arrived in 1996 with a slightly sharper toe, and the current XP2 Super took over in 1998. The original 1991-1996 XP2 is now a footnote in Ilford catalogs, but the formulation is genuinely distinct from XP2 Super and old hands will tell you the curve sits differently. Available rolls today are freezer stock or estate finds in 35mm and 120.

Reciprocity exponent is 1.31, the conventional silver-grain baseline despite the dye-coupler chemistry. Zone Light Meter applies the correction past one second. A 30-second metered exposure becomes about 90 seconds at the negative. For tripod work in dim interiors, where the convenience of C-41 lab processing always mattered most, the threshold comes up regularly.