[ubuntu-uk] GIMP Add-In Maybe?

[Norman Silverstone]

> >> > I have the pleasant task over the Winter months to start to scan in a few
> >> > thousand 35mm colour negatives.
> >> >
> >> > However, before I start I wonder if anyone knows of anything that will turn
> >> > a digitised colour negative into a colour positive.  I've wandered through
> >> > the GIMP, but really haven't a clue as to what I'm looking for.
> >> >
> >> > Anyone know of any app that will do this conversion and do it well as once
> >> > completed and stored in multiple places, as you do, the negatives are to be
> >> > disposed of.
> >> >
> >> > Cheers
> >> >
> >> > Ian
> >> >
> >> >
> >> >
> >> Colours - invert
> >> from the menu. However ImageMagick may be more scriptable for you.
> >
> > This does not allow for the colour distortion caused by the built in
> > filter in colour film.
> 
> Is the colour distortion consistent? If so then than the negative of
> that tint could be applied to the images.
> http://www.imagemagick.org/Usage/color/#tinting

My understanding is that the colour of the filter may vary from one
manufacturer to another and there is already a plug-in available for
GIMP which takes this into account.
> 
> If I had thousands of images to adjust, I would take out a handful,
> then play with a script using ImageMagick. A number of steps may be
> required. It could also generate some thumbnails. When done, it would
> make sense to keep the original scans secure. Even with careful
> planning, it would seem likely that at least a few images would
> benefit from a manual tweak, and that would be best done on the
> original image.

My understanding is that the colour of the filter may vary from one
manufacturer to another and there is already a plug-in available for
GIMP which takes this into account.

>From my experience it is not feasible to tweak the original, scanned
negative but that a considerable amount of adjustment may be made to the
positive image once the initial conversion and colour correction has
been made. A word of caution, do not expect to get the same result
digitally as one gets from commercially printed negatives without some
effort. I have spent many hours copying and processing old colour
negatives and the results have been most rewarding and, sometimes
frustrating.

Norman