What does "inversion" mean in photography?

Retro film is changed from the photosensitive material of film camera to digital.

Generally, film is called negative film, and its characteristic is that the color on the negative film is reversed, and the negative film cannot be used directly. Only by developing and adding color pigments can normal color photos be formed.

Reverse film, also called positive film, is characterized in that the color on the film is consistent with the shooting scene, and it can be directly used as slide show or for publishing and printing.

But the real feature of the reverse film is that the photos taken have higher contrast and saturation, and the colors are more gorgeous. Moreover, the shooting requirements are stricter, because the tolerance is low, so you can't underexpose or overexpose. The effect of this kind of photo is completely different from that of negative film.

In the digital age, this special effect has been transplanted into digital cameras, which can simulate different reverse film effects. Because Fuji is very strong in reverse film, this function is inevitably put in the camera.

Here is a comparative article between reverse film and negative film, you can have a look.

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