Image resolution refers to the amount of detail or information present in an image, usually measured in pixels per inch (ppi) or dots per inch (dpi). The higher the resolution, the more detail or information the image contains.

In digital photography, image resolution is determined by the number of pixels in the image. The resolution is often represented by the total number of pixels in the image, such as 1920 x 1080 or 4000 x 3000. The first number represents the number of pixels in the horizontal direction, while the second number represents the number of pixels in the vertical direction.

When printing an image, the resolution is often measured in dots per inch (dpi). A higher dpi value means that the printer can produce more detailed and higher quality prints. For example, a print with a resolution of 300 dpi will have more detail and sharpness than a print with a resolution of 72 dpi.

It’s important to note that increasing the resolution of an image does not necessarily improve the quality of the image. If the image is taken with a low-quality camera or has poor lighting conditions, increasing the resolution will only amplify the existing problems.

In summary, image resolution refers to the amount of detail or information present in an image, and is determined by the number of pixels in the image. A higher resolution generally means more detail, but increasing the resolution of an image does not necessarily improve its quality.