This is a neat little trick I just thought of that will get you clipping warnings in Photoshop – just like Adobe Camera Raw and Lightroom has.
Clipped highlight and shadow areas will print real bad, so this is something you always want to check before printing your images!
What I do is I add two solid color layers and add blend-if to them. This will show clipped highlights in red and clipped shadows in blue.
To simplify I have created an action that you can download:
Download it here