Ilford Multigrade Paper Negative

Using darkroom paper as in-camera negative material is one of the oldest tricks in large format, and Ilford Multigrade RC is the most common modern paper for the job. The paper is not sold as film. It is enlarging paper, designed to receive a projected negative and produce a print. Cut it to fit a 4x5 or 8x10 sheet holder, load it emulsion-side toward the lens, and you have a capture medium with several unusual properties.

The effective speed lands around ISO 6 for unflashed paper and closer to ISO 8 if you pre-flash. Pre-flashing means giving the paper a controlled brief exposure to dim light before loading, which raises shadow sensitivity and compresses the extreme contrast that paper normally produces in daylight. ISO 6 is slow enough that a daylight scene at f/22 runs around half a second, so a tripod is mandatory.

Multigrade is orthochromatic. Reds drop to near black, blues blow out to paper white, and skin tones come back looking like nineteenth-century daguerreotype work. That is the appeal. Faces render with the heavy shadows and pale highlights of early portrait studios. Bring an orange or light yellow filter to tame contrast; a 2x yellow filter is the common starting point.

Dynamic range is roughly three to three and a half stops, which is brutal compared to Tri-X or HP5+. Meter incident, place your highlight where you want it, then accept that the shadow will block. Compared with Harman Direct Positive paper, Multigrade is faster and cheaper but gives you a negative you then have to contact print or scan and invert.

Process under safelight. Develop by inspection in a tray under a red LED safelight, watching the image come up. Standard paper developers like Dektol 1:2 work perfectly.

Reciprocity exponent is 1.33. Zone Light Meter applies the correction past one second. A 10-second meter reading extends to about 22 seconds at the negative; a 30-second exposure climbs near 95 seconds. With ISO 6 in shade or interior light you will be in reciprocity territory constantly.