Part of my workflow is to use a selective colour adjustment layer in photoshop to remove cyan from the red channel. However, I'd like to know if there is a way to emulate this kind of adjustment in Camera Raw. That way I could incorporate the adjustment into my camera raw presets and save a heap of time! Thanks for reading, hope you can help!
I don't fully understand what it is you are trying to do. But if you switch to the red channel in the tone curve can you get the adjustment you are looking for?
To clarify, in photoshop I create a "selective colour" adjustment layer. In selective colour, you can adjust the cyan, maganta, yellow and black components of Colors. I choose RED, then reduce the cyan component of red. This is very different to simply shifting all the reds toward cyan. My question is, can I emulate this type of adjustment in Camera Raw?
In ACR you can go to your red hues and shift them left or right. That will be the closest I think. Also, if you are doing this due to images somehow always looking too cyan straight out of the camera, consider having a look at the camera calibration tab first.
"Taking away cyan from red" is just another way of saying "increase red saturation". They are complementary colors.
Yes, you can do that in ACR.