CineStill Redrum

Redrum is the same 800T emulsion you already know, just loaded backwards. CineStill spools it through the cassette with the base facing the lens instead of the emulsion, so the exposure passes through the orange-red acetate carrier before the silver halides ever see the light. The base soaks up around two stops of blue and green and leaves the reds to do the work. Hence the name, and the spooky autumn palette every Halloween reel on Instagram seems to use.

The stock launched in October 2021 as a limited 120 run at $14 a roll. It has come and gone on the CineStill site in waves since, and there has never been an official 35mm version. If you see Redrum 35mm somewhere, someone respooled it. Native ISO is 200, which is the 800T sensitivity reduced roughly four times by the base filtration.

The palette is not really redscale in the Lomography Redscale XR sense. Because the base emulsion is tungsten cine stock with no anti-halation backing, point light sources still bloom, just in deep orange-red rather than the magenta halos 800T is known for. Sunsets get pushed almost into the infrared visually. Foliage goes amber. Skin tones turn sepia. Cool light, like overcast or window shade, comes back more usable than direct sun. Noon sun clips into muddy brown.

Rate at 200 in normal light. Push to 400 for more vivid reds at the cost of muddier shadows. Process in standard C-41 at any lab. The orange cast is built into the negative; the lab does not need to do anything special.

Format is 120 only, sold in single rolls, restocked irregularly. Treat any roll you find as a limited edition and shoot it on something you care about.

Reciprocity exponent is 1.20. Zone Light Meter applies the correction past one second, so a metered 30-second exposure becomes about 50 seconds at the negative. For night street work where you want red streetlight bloom and city sky pushed toward magenta, that correction is worth taking the tripod time for.