Understanding Grainage in Digital Photography and Image Processing
Grainage is a term used in the context of digital photography and image processing. It refers to the size of the individual pixels that make up an image, and specifically the number of pixels per inch (PPI) or pixels per centimeter (PPCM) that are used to capture or display an image.
In other words, grainage is a measure of the resolution or detail of an image, with higher grainage indicating a higher level of detail and lower grainage indicating a lower level of detail. Grainage is often used as a way to compare the quality of different images or to determine the appropriate size for printing or displaying an image.
For example, a camera with a high grainage (such as 200 PPI) might be able to capture more detailed images than a camera with a lower grainage (such as 100 PPI), assuming all other factors are equal. Similarly, an image with a high grainage might be better suited for printing or display at a large size, while an image with a lower grainage might be better suited for smaller prints or online viewing.