What does the unit of photography mean?

In photography, we often hear "what is the unit of the work?" This actually refers to the size unit of the work. Common size units are pixels, inches and centimeters. Photographers need to choose suitable units when dealing with photos, which not only affects the quality of works, but also directly affects the display effect of photos.

There are two main factors that affect the selection of photo units, one is the use of the work, and the other is the requirements for output equipment. Large-sized works are suitable for printing and exhibition, while small-sized works are suitable for publishing on the Internet. In addition, when we output photos to the printer, we need to choose the correct unit and resolution to ensure the quality of the output.

Choosing the right unit needs to consider many factors, such as working purpose, output equipment, resolution and so on. Generally speaking, for photos published online, we can choose a smaller pixel unit; For works that need to be printed, you need to choose a higher resolution and a larger unit. In short, different uses need to choose different units. On the premise of ensuring the quality of works, the rational use of units can make photos more artistic and expressive.