Some time ago I set out to create a camera profile for ACR that would do one fairly simple thing: Match the colors better to those in my camera JPEGs. It always seemed kind of incredible to me that Camera Raw was not set and could not be set to do this right out of the box.
Having consistent color in all the modes the camera shoots has a lot of subtle advantages – mostly by just not surprising you… Previews of JPEGs embedded within raw files match what you first see when you open Camera Raw, and in general it just feels better to use (okay, so maybe I have a quirk that way). That doesn’t say you can’t change all the sliders the way you like to make the image even better, but at least I have a consistent starting point with the sliders center scale.
The color match may not be utterly perfect (there is only so long you can tweak the profile program before you go nuts), but at least I got it on nearby bases in the same ball field – unlike the results from the canned Adobe profiles. Here’s a screen grab of an emedded JPEG being displayed next to the Camera Raw window on initial settings.

You might say such a match doesn’t matter, and of course you can work without it. Certainly many people are. You might even say that the color from the Adobe profiles is more “accurate” or some such. But I have always quite liked the color right out of my Canon, and this gives me that.
Those of you who look closely may see that I have also dialed in 0.25 EV of negative exposure compensation by default. This gives me, as a staritng point, a little more overexposure recovery than you get with the default profiles, as I roll off the highlights instead of having them crash into the edge of the graph.
My question is this:
On occasion others have tried my profile, and they claim that it doesn’t give them the level of consistency I’m seeing between my own JPEGs and ACR defaults.
Could this be because individual cameras (or lots of cameras) are internally profiled somehow, and thus the mapping of the raw color values to a JPEG image differs from copy to copy?
Have I just not got it “close enough”, and other folks are sensing the remaining differences?
Or should I suspect that these other folks have got some of the default settings wrong, or maybe that they’re struggling with getting color profiles right on their monitor and system?
These people have never been co-located with me, so I haven’t been able to actually see what they’re seeing nor check their controls myself.
-Noel