Negative Inverter
Camera scan → positive, a whole roll at a time.
Click it, then click something that should be neutral (a white wall, a cloud, grey asphalt) to balance the colours.
More adjustments
How to use it
- Scan with your camera (Valoi, copy stand, light pad…). If it can, shoot RAW+JPG: the JPG goes here, the RAW stays for fine editing.
- Drop the whole roll. Settings apply to every frame, but auto levels are measured per frame, so they stay consistent without having to edit them one by one.
- Use “Crop border” to cut off the film rebate and sprocket holes; they would throw off the levels. Arrow keys ← → move between frames. For colour film, pick “Colour”: the orange mask is removed automatically; fine-tune with the grey picker.
- For RAW files and fine editing, use darktable (free software), which has a module for this: negadoctor. I learned to use it with this Disparafilm tutorial (in Spanish).
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