What is a resolution in photography ?

In photography, a resolution refers to the amount of detail that can be captured in an image. It is typically measured in pixels per inch (PPI) or dots per inch (DPI). The higher the resolution, the more detail and clarity the image will have. Higher resolution images are often preferred for printing or displaying on high-resolution screens, while lower resolution images are suitable for sharing online or viewing on smaller devices.

Resolution in photography refers to the level of detail and sharpness of an image. It is measured in pixels per inch (PPI) or pixels per centimeter (PPC). The higher the resolution, the greater the number of pixels in the image and the finer the detail will be.

The resolution of an image is determined by two factors:

1. The dimensions of the image in pixels (width and height)
2. The size of the image in physical units (inches, centimeters, etc.)

For example, an image that is 1000 pixels wide and 1000 pixels high has a resolution of 1000 PPI. If you print this image at a size of 10 inches by 10 inches, each pixel will be printed as a 0.01 inch square. This will result in a very sharp and detailed image.

However, if you print the same image at a size of 20 inches by 20 inches, each pixel will be printed as a 0.02 inch square. This will result in a less sharp and detailed image because the pixels will be larger and more visible.

The ideal resolution for an image will depend on the intended use. For example, images that are intended for print should have a higher resolution than images that are intended for web use.

Here is a general guideline for the ideal resolution for different types of images:

- Print: 300 PPI or higher
- Web: 72 PPI or higher
- Social media: 150 PPI or higher