# How to enable Adobe Camera Raw in Photoshop?

The Adobe Camera Raw filter is greyed out, how do I enable it? I am using Adobe Photoshop CC 2015. I have a JPG file that I opened up in the Photoshop editor. In the layers panel I right clicked the layer and selected Convert to Smart Object. I then tried to go to: Filter > Camera Raw Filter ..but this option is greyed out. Not sure why? Might it be that the image mode is incorrect? It is currently set to: CMYK Color | 8 bits per channel I hope someone can help me with my confusion.