Dodging and burning means selectively lightening or darkening parts of an image to guide attention and add depth.

Common uses include:

• correcting local exposure when the overall exposure is already good
• making features stand out, such as subtly lightening eyes
• darkening edges or parts of clouds for shape and drama
• creating a more natural-looking vignette by burning the edges instead of applying a simple fade to black
• enhancing texture by increasing local contrast: burn the darker folds/creases and dodge the highlights where light already falls

In Lightroom, this is typically done with a local adjustment brush or similar masking tool, adjusting exposure or brightness. In Photoshop or GIMP, you can use dedicated dodge and burn tools or paint in the effect with brush-based adjustments.

The key is subtlety: follow the existing light in the scene rather than inventing new lighting. Used carefully, dodge and burn can add emphasis, realism, and texture without making the edit look obvious.