It would be useful for you define what a profile is, then what a Look Profile is, then what a rendering preset is and how they all differ. Math isn't necessary, end results to the end user are.
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Regardless of what the look is called, profile, presets, etc. it would be of tremendous value if what you set in C1, Dpp, LC11, etc. would be picked up exactl the same in lightroom and ACR.
This is not to say lightroom is bad, there is no bad in terms of converters and lightroom is the most full featured, but I find with all of my cameras, Nikon, Canon, Leica and Phase it does take a lot of movements to get to the original look in lightxroom I get from the manufacturer's converters, at least as a starting point.
I break digital capture down to three parts. The on set view which is to assure yourself and the client that your going in the right direction. The second step is processing for web galleries and/or contacts which is a defined but general view of the look and the selection and of course the third is the final finish out that should be dead on perfect.
What would be nice actually what would be great, is if we could preset a series of "film looks" for all the cameras and backs, embed them into the cameras and all of the converters would read this looks as we shot and when we went to process.
Right now it's a mixed bag and most of us shoot, then make the film look up at a later stage and taking a p30 file for instance, going from c1 3.7, c1 v4, Raw Developer, Lightroom etc. in initial view looks like you shot with three or four different cameras. Sometimes this is ok, but usually just confusing and requires a lot of work to get back to the basics or to the "film look" you envisioned when you were shooting.
JR