In retouching, what is the difference between dodging and burning and when are they used on product images?

• A. Dodging darkens areas to add depth; burning lightens areas to reveal detail.
• B. Dodging and burning are interchangeable terms for color grading.
• C. They are only used to adjust overall exposure.
• D. Dodging lightens areas to reveal detail; burning darkens areas to add depth, usually on separate layers with masks.

Answer: (D)

Dodging and burning are selective tonal tools that shape light and depth in specific areas rather than changing the whole image. Dodging lightens chosen areas to reveal detail or bring highlights forward, while burning darkens chosen areas to deepen shadows and increase contrast. In product photography, this local control helps you sculpt the form, emphasize texture, and make important details stand out, especially where lighting is uneven or specular reflections can wash out features.

Doing these adjustments on separate layers with masks keeps the edits non-destructive and highly controllable: you can reveal or mute the effect anywhere you want by painting on the mask and adjusting opacity. For example, you might brighten a highlight on a package with a dodge layer and simultaneously deepen a shadow under a seam with a burn layer, refining the product’s dimensionality without touching other areas.

The other statements don’t fit because dodging and burning describe brightness changes, not color grading; they aren’t interchangeable terms. And they’re not limited to adjusting overall exposure—it's all about targeted, local tonal changes.