Sure, please provide me with your ID ^^.
I asked for your example file to test with the latest updates of everything and I'm seeing the same thing you are, where the Camera Raw Filter in PS CC 2014.1 is different than the ACR 8.6 plug-in hosted PS CC 2014.1 and the plug-in is the same as in Lightroom 5.6:
I cannot explain why the Camera Raw filter is different.
Thanks for the example photo. I am passing on this forum discussion to Adobe and see what they say.
Please go ahead. ^^
Photoshop and LR/ACR are different because of the differences in working spaces, which dictate the color numbers that the algorithms are looking at. You were having ok results in PS's CR Filter. I was too, until I converted your image from my PS's internal working space of ProPhotoRGB to sRGB. Then I got a worse perspective but the opposite way from LR/ACR:
Eric Chan is a camera raw engineer at Adobe--you'll see his name in the list if you do (Help /) About Plug-ins / Camera Raw. Here is Eric's response when I asked him about the differences you (and I, above) were seeing after observing I could see differences in PS's CR-Filter if I converted one colorspace to another.
Yes, the results in ACR Filter will depend on color space (and bit depth).
In general, Upright is (very) sensitive to both the input data, and how the code is built. Change a single pixel in the input image, and you can get a different result. Change the instruction ordering/scheduling, and you can get a different result. This means Mac and Windows builds may produce different results, because Mac and Windows have different compilers; same is true between 32-bit and 64-bit builds (e.g., on Windows), since the instructions are different.
For these reasons, you should not actually expect that invoking Upright will produce the same results, under different circumstances / entry points. However, it is expected that once Upright has computed a result on a particular image, wherever you take that image afterwards (Mac vs Win, ACR vs Lr), it will always continue to look the same -- i.e., the computed transform/correction will remain the same.
So it's not a bug that things are different, at if the workspace and therefore the internal pixel numbers are different, which is true between LR/ACR and PS-Filters.
Thanks aot. Eric Chan thanks too.