Final answer:
Brightness uniformly changes the lightness or darkness of an image, while contrast modifies the difference between its light and dark areas. Both are key tools in image editing used to enhance the visual quality of a photo.
Step-by-step explanation:
Brightness adjusts the brightness of the entire image, while contrast adjusts the brightness of specific portions of the image. When you edit an image, altering the brightness will uniformly lighten or darken all areas of the photograph. In contrast, changing the contrast will increase the difference between the light and dark areas, making the highlights brighter and the shadows darker.
Both brightness and contrast are fundamental concepts in photo editing and are commonly used to improve the visual appeal of images. Adjusting brightness can help with photos that are too dark or too light, while contrast adjustments can help give an image more depth or make it stand out more.