Vignetting

Vignetting is a darkening of the edges of the image, mostly the corners of an image …caused by light falloff. It's most common with a wide-angle lens …because of the extreme angles involved with a wide-angle lens. …But we can also add a vignetting effect to an image if you would like. …Now, keep in mind there are two types of vignetting adjustments within Adobe …Camera Raw. The first is corrective and that's found …under Lens Corrections in the manual section where we can adjust for lens vignetting.…

Keep in mind that this is specifically for lens vignetting, meaning you're …compensating for the behavior of the lens and that means that it's always going to …operate around the edges of the photograph. …What that translates into is that if you crop the image, you won't have an even …vignetting effect if you are using this lens vignetting. …So the lens corrections vignetting options are strictly for correcting the …image, for correcting the behavior of the lens. …If you want to add a creative vignetting effect, and then you'll want to witch to …