Here’s a very simple tip for the newest Post Crop Vignetteing settings in the Camera Raw Effects panel. You’ll see 3 options listed in the style pop-up list. The only one worth a darn is Highlight Priority so stick with that one 90% of the time. You can try Color Priority once in a while if you don’t care for that “burned in” edge look and it’ll keep the colors looking more true. But honestly, Highlight Priority gives the nicest effect and it’s where we stick for most of our photos.