For NEW pics,
- why not take your Digital,
…
and then scroll down in Color Rendering for the available “filmtypes”, including 3 different Kodak Portra simulations.
Don’t remember to have used any Kodak Portra Film, but tried those simulations. – Like with the others, you can easily see (and apply) the different renderings and then judge yourself, if they suit your needs, instead of only reading about them.
otherwise for the work you are going to introduce … → Negative Conversion