3M ColorPrint HR 400

ColorPrint HR 400 was the fast end of 3M's Scotch-branded consumer color negative lineup through the 1980s and early 1990s. Like the rest of the HR family, it came out of Ferrania's plant in Italy, the Liguria facility 3M had owned since 1964. The 400 speed was the workhorse of any consumer color line in that era because it covered indoor flash, kids in shade, vacation sunsets, and the daily mix amateur shooters actually encountered.

The Ferrania color science of the period is the fingerprint. Yellows lean warm without going Kodak Gold orange. Greens come back muted rather than punchy. Reds stay honest. Side-by-side with Fuji Superia 400 it reads less saturated. Side-by-side with Kodak Gold 400 it reads cooler and a touch flatter.

Grain at ISO 400 is large and visible. The emulsion lagged behind the T-grain revolution that put Kodak Gold and Fuji Superia ahead in the late 1980s. Latitude is reasonable for a consumer 400. A stop and a half over prints acceptably; half a stop under loses shadow color quickly. Press shooters used Tri-X or Ektapress for serious work; this was the film for the family camera.

Where it actually shone was as a cheap private-label workhorse. Kmart sold a near-identical emulsion as Focal 400, and drugstore chains rebranded the same Ferrania stock under dozens of labels. 3M discontinued the line around the Imation spin-off in 1996.

Formats were 35mm only. The slower HR 100 and HR 200 emulsions made it into 126 Instamatic cartridges and 110, but the 400 speed never left 135. Process in C-41 at standard times. Expired Ferrania 400 shows heavy grain build-up and pronounced magenta shifts. Rate found stock at 200 to help the shadows.

The reciprocity exponent is 1.20. Zone Light Meter applies the correction past one second. A 5-second meter reading runs to about 7 seconds at the negative; a 30-second exposure climbs to roughly a minute. For indoor available-light at narrow apertures, expect to cross that threshold even at the 400 speed.