What will be an easy way converting digitized negative images to positive images?

[Stephen Liu]

(10-26-2024, 08:55 AM)Ofnuts Wrote: You can use Curves with a NW-SE diagonal as a starting point and then tweak the curve:

(image used in example is from Wikipedia)

And if a curve works well for you you can save it as a preset.

However, if you start from a smartphone picture, the picture has likely already been over-processed by the smartphone and useful bits of info have been lost. If your smartphone can do DNG or "raw", that could be a better optikon (and the demosaicing app could have pre-cooked curves for specific film types).

Hi Ofnuts,

Thanks for your advice.

I tried your suggestion but I found only one curve here, not 2 curves.

Channel: [Value] [Reset Channel]

I use Samsung Galaxy S24 smart phone.  I haven't appled any setting taking the photos.

Regards