Negative conversion

Photograph: Joachim Braun (jjbraun), “10-1.NEF”, https://discuss.pixls.us/t/negadoctor-color-negative/43472. Inverted and adjusted in OmaRAW. Photograph, adapted renditions and this demonstration film: CC BY-SA 4.0, https://creativecommons.org/licenses/by-sa/4.0/. The film-base values are specific to this scan.

0:03 Negative conversion · see the starting image
A real colour-negative camera scan by Joachim Braun · CC BY-SA 4.0.

0:08 Prepare the negative for conversion
This enables inversion and removes the normal tone rendering.

0:14 Calibrate the film base · red
Match the film-base controls to this scan; watch the cast become more neutral.

0:21 Calibrate the film base · green
Match the film-base controls to this scan; watch the cast become more neutral.

0:29 Calibrate the film base · blue
Match the film-base controls to this scan; watch the cast become more neutral.

0:36 Set the film density range
Density range changes how negative densities map into the positive image.

0:43 Adjust print brightness
Print exposure changes the positive image’s overall brightness.

0:51 Shape the paper contrast
Paper grade changes contrast in the converted positive.

0:58 Set the print black level
Paper black adjusts the dark end after conversion.

1:05 Compare the original negative
The conversion is editable; the scanned source is retained.

1:12 Restore the positive conversion
Photo and film: CC BY-SA 4.0 · Photo: Joachim Braun. Scan-specific settings.

1:18 Explore the controls in the written tool reference
OmaRaw