> >> > 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 -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.ubuntu.com/UKTeam/
