In the diagram of the layer structure at
https://www.adox.de/Photo/elementor-13690/, it is noticeable that the sequence is red-sensitive, green-sensitive, blue-sensitive. In all other colour films, the order is reversed: first the unsensitised, naturally blue-sensitive coated layer, then a yellow filter layer (which decolourises during development). This blocks the blue component of the light, as the underlying coated layers for the green and red components retain their original blue sensitivity during sensitisation. If the order of the coated layers is reversed, the 1:1 correspondence between the blue, green and red colour components of the light and the corresponding coated layers of the film no longer works. The effect is familiar from Rollei Redbird, a standard colour negative film that is simply wound in reverse and is therefore exposed from the reverse side.
In fact, the sample images from the Adox Mission Helios also reproduce the subjects with an overemphasis on red and yellow tones. So this is clearly a special-effect material that isn’t designed for natural colour reproduction at all, is it?
