Assuming that you are (or have) optically printed, of course if a scanned image you can change the color and increase contrast.
examples I see of it seem VERY warm
You could also try one of the kodak Vision3 movie films.
I can’t remember if portra UC used Vision2 or Vision3 technology.
Your R&D analogy is very apt and insightful. I sat near the fellow who designed the original Portra films. This was happening simultaneously with the development of APS film, and I’m sure he was encouraged to use as much common technology as possible. However, these were “muffin and cake” products with different goals, so technology overlap likely occurred in only a broad, “strawberry flavor” sense. And then there was the need for the imprimatur stamp of the designer(s).Neither, probably...
Firstly, it's doubtful the cine films were technology leaders at that point. I think there's a clear statement (by Joe Manthey maybe? ex Kodak emulsion engineer) who indicated that still film served as the technology pull, so it would have seen innovations/new technologies implemented before cine film.
More importantly, the "X is based on Y" reasoning I sometimes see is problematic from an R&D perspective. Look at technologies like a well-stocked larder. When you're going to bake a cake, you're going to take ingredients from this larder depending on what kind of cake you want. Now, imagine you invented a new "strawberry flavor" ingredient because you figure people will like it. So on that day, you decide you're going to bake some nice muffins with that ingredient. The next day, you use it in a cake. Does that mean the cake is based on the muffins, because they both use the new strawberry flavor? What the demand on day one would have been for cake, and not for muffins? Would then the muffins have ended up being based on the cake instead of vice versa? In reality, neither is the case. Both are based on the same technology, and that technology was developed in response to a perceived market requirement. The technology then ended up in the first opportune product in the roadmap that would benefit from the new tech, whose development effort wouldn't be harmed (too much) by the inclusion of this new technology, where the market requirements made sense etc.
What you can obviously say is that films from the same manufacturer tend to share certain technology traits, and there will generally be some similarities between products from roughly the same era. Then again, there will also be plenty more similarities between films from entirely different eras and entirely different manufacturers....
Note, finally, that the Vision film stocks are ECN-2/CD-3 products, not C41. They do share technological similarities with C41 color still film (see above) and yet they are fundamentally different in other ways.
it seems I need to just keep using Portra, or Ektar if a slower film is appropriate and I want less work to get get more color "pop."
Your R&D analogy is very apt and insightful. I sat near the fellow who designed the original Portra films. This was happening simultaneously with the development of APS film, and I’m sure he was encouraged to use as much common technology as possible. However, these were “muffin and cake” products with different goals, so technology overlap likely occurred in only a broad, “strawberry flavor” sense. And then there was the need for the imprimatur stamp of the designer(s).At Kodak the major film types – color neg, cine, slide, and B&W – were designed and developed in silos, i.e., the people involved generally stayed within a single film type, and because of that not many specific components were shared across platforms with the possible exception of color couplers. As an example, they may have been using T-grain emulsions but not the same ones. At the time, color neg was the tail that wagged the dog.
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