I do not know if the term is correct. In Spanish we use Viraje (photographic turn) when we change a color photo or black and white, to sepia, for example.

Excellent results, I like how the texture has enhanced.

...another area of intervention for the script magician Graechan!!!

Same here. It's beautiful! Much richer than the original.

Great job, the result is excellent

Hola Jamac4k!

Eu adoro técnicas que envolvam restauração ou tratamento de fotografias! Aprendi a técnica do "Check Blue channel layer", assim não precisei baixar o script do Pat David. Mas fui obrigado a baixar o "Calculate Saturation".

O tutorial é muito claro e com links que fazem referência a todo tipo de informação que se possa precisar.

Nunca tive ideia que existia a possibilidade de se obter algo com Tools → GEGL !! E a opção → c2g é muito interessante!

Testei a técnica em algumas imagens, e em algumas os resultados são excelentes!

Gracias por compartilhar conosco esse tutorial!

In english.

I love techniques involving restoration or treatment of photographs! I learned the technique of "Check Blue channel layer", so did not need to download the script from David Pat. But I had to download the "Calculate Saturation".

The tutorial is very clear and links that refer to all kinds of information you might need.

I never had the idea that there was a possibility of getting something with Tools → GEGL! And the option → C2G is very interesting!

I tested the technique on some images, and some results are excellent!

Thanks for sharing this tutorial!

@ll: thanks for your comments!.