You are here

How to neutralise the orange mask of a color negative film using Gimp or UFRaw?

Does anyone could tell me how to neutralise the orange mask of a color negative film using Gimp or UFRaw?

I'm in the process of digitalising my 35mn films shooting them with my Nikon D300 with the 105mn macro lens. It works very well, it's fast (much faster than a film scanner), quality is good.

No problem for color slides nor for b&w negative films. I shoot them in raw format and have then all the leasure for processing through the raw process before creating the jpeg once the result appears to be correct.

There is a problem with color negative films that have the well known orange mask. A solution exist with Photoshop using layers but it is very time consuming and it's not compatible with the raw logic (output format is psd or something else but not raw). Silverfast offers a good solution but it's costly and still no logic with raw format (only jpeg or tiff).

My question is wether it exists a solution with UFRaw, Gimp or any plugin that could read the NEF file (Nikon Raw), process the orange mask, and output a corrected NEF file (NEF plus XMP parameters file eliminating the orange mask).

Nikon says it has no solution for that.

Thanks for any help.

JPM

Forums: 

There is a good description of a manual process here:

http://www.tedfelix.com/Photography/ColorNegative.html

and another here:
http://old.macedition.com/feat/film/feat_film_20030626.php

That should work with Gimp as well.

-Rob A>

Subscribe to Comments for "How to neutralise the orange mask of a color negative film using Gimp or UFRaw?"