Final answer:
The image file size is measured by the amount of storage space required to save the data, typically in units like KB, MB, GB, and TB. Resolution and compression affect file size and image quality, with resolution relating to pixel count and compression to reducing file size at the potential cost of quality. Digital images are often stored on memory cards with varying capacities.
Step-by-step explanation:
Image file size is described or measured by the amount of storage space needed to store the data. Computer storage space is quantified in units such as kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB).
a single-spaced typed page. On the other hand, one MB is 1,024 KB and one GB is 1,024 MB. The largest of these common units, one TB, is equal to 1,024 GB.
Aside from storage capacity, photo size is also an important factor and is calculated in megapixels (MP), where one megapixel consists of one million pixels.
A photo's size in megapixels is determined by multiplying its width in pixels by its height in pixels and then dividing by one million. Furthermore, the file size and quality of an image are affected by resolution and compression. Resolution refers to the number of pixels that make up an image. Compression is the process of reducing file size by discarding unnecessary pixel color information, which may reduce the quality of the photo if overused.
Lastly, digital cameras store images on various memory cards such as SD, MS, xD, and CF, with capacities ranging from MB to GB, determining how many images a memory card can store.