Harman · ISO 125 Color negative
Harman Red 125
Harman Red 125 is C-41 color negative film loaded so the emulsion faces the wrong way: you're exposing through the base, which filters out the blue and green layers and lets mostly the red-sensitive layer record the image. The result is a color palette that runs from deep orange in the shadows through burnt red in the midtones to yellow-orange in the highlights. Harman released it in February 2025 as the first redscale film from a mainstream manufacturer rather than a specialty re-roller.
Compared to Lomography Redscale XR, Harman Red 125 is lower in saturation and more controlled in its color response. Lomography's version can go extremely red and magenta; Harman's sits warmer and more amber-orange in the same lighting conditions. For subjects where you want the redscale effect without everything turning the color of a darkroom safelight, the Harman version is easier to work with. The lower saturation also means more information survives in the highlights before they blow out to solid yellow.
ISO 125 is an honest rating for the base-facing exposure method. The light loss through the film base is already factored in. Metering at box speed and trusting the result works. The film processes at any C-41 lab without special handling; the operator does not need to know it is a redscale stock.
Available in 35mm only at launch.
Reciprocity exponent is 1.20. Past one second, Zone Light Meter applies the correction: a metered 30-second exposure becomes about 70 seconds with a 1.20 exponent. For the long golden-hour and low-light shooting this film is suited to, that difference is meaningful enough to affect results.
How the app handles this stock
- Box speed: ISO 125. Picker exposes pull/push chips so you can shoot it at any speed you want and the meter follows.
- Reciprocity: Above one second the app raises metered time to the power of 1.20.
- Expired film: if you load an old roll, set the expiry year and storage in the app and the ISO scales for you. Color negative decay rates are baked in.