camera raw presets in photoshop look different. why?

[teddym97753022]

Hello,
Maybe this has been asked a thousand times before, but I don't see any answer about this issue.
Imagine the following workflow:
1. Open a Raw-picture in Camera Raw (CR).
2. Create a look (changing exposure, white balance, gradation, contrast, saturation, etc.) and save this as a Camera Raw Preset.
3. Open the Raw-Picture (without this look) with no(!) changes made and import it into PS.
4. Retouch the picture.
5. Open the Camera Raw-Filter in PS and open the created preset under bullet 2.

Now, this looks totally different than the original preset created in CR. Why?
Any idea?
It seems, the presets only look the same (or close), when the white balance is set in both ways on "as shot".
But what if setting a different white balance (custom) is part of the created look?
I understand that changing the white balance in Camera-Raw-Editor is scaled in Kelvin and in PS it is scaled from -100 to +100.
But the scale is not the problem. The problem is, that the adjustments for white balance and tint react totally different as if it was a different tool.

And now you may ask, why do I create the colour look first in Camera Raw and then retouch the picture in PS without this look?
Well, sometimes I need 2 or more different color looks from one picture, so of course I retouch it first without the look and then put the preset with Camera-Raw-Filter on top.

Thanks and Cheers,
Teddy

[Stephen_A_Marsh · Accepted solution]

As I just happened to mention earlier today in this topic thread, linear raw data and rendered data are different and depending on the edit, ACR behaves differently with the same input values on the two different data types.

Some whitepapers on this and related topics:

Understanding Digital Raw Capture - Adobe

https://wwwimages.adobe.com/content/dam/Adobe/en/products/photoshop/pdfs/linear_gamma.pdf

http://www.adobe.com/digitalimag/pdfs/highlight_recovery.pdf

https://www.adobe.com/digitalimag/pdfs/ps_workflow_sec1.pdf

https://www.adobe.com/digitalimag/pdfs/ps_workflow_sec2.pdf

https://www.adobe.com/digitalimag/pdfs/ps_workflow_sec3.pdf

https://www.adobe.com/digitalimag/pdfs/color_managed_raw_workflow.pdf

[Stephen_A_Marsh]

I am guessing that you will need to process the raw camera data file using “flat” settings at zero values and with “as shot” white balance, then open this rendered file into Photoshop or ACR (CMD/CTRL R). Then create the “look” that you are after and save a preset from the rendered data (rather than raw).

[teddym97753022]

Hi Stephen, thank you for your explanations about the difference in behaviour between raw data and rendered data. I totally understand that, although I don't understand why it has to be like this and why raw data and rendered data still are not programmed to behave in the same why when treated with the camera raw editor or filter. Life would be easier, then.
Anyway, your suggestion is right. That's the way how I usually work.