Question: Suppose that while using the Post Crop Vignetting tool, the Highlights slider is grayed out. What is the most likely cause?

1. You are using the Paint Overlay style.
2. You are editing a raw file.
3. You are using the Color Priority style.
4. You are using the Highlight Priority style.

Answer: The correct answer of the above question is Option A:You are using the Paint Overlay style.