Converting files to Adobe RGB in Photoshop

To convert your files to the AdobeRGB (1998) color space, do the following:

1) Choose Edit>Convert to Profile.

2) In the Convert to Profile dialog box, choose AdobeRGB (1998) in the Destination Space field. If necessary, uncheck Flatten Image to Preserve Appearance to keep a layered file. See dialog box below.

3) Be sure to save your file afterward.