Things to know about an image

When we click any photo from the camera, we only check the quality of the picture, but there are certain things to know about an image. Let’s dive deep into it.

• What is Pixel?

Basically, the pixel is the small piece of the image. The word pixel is based on a contraction of pix ("pictures") and el (for "element"). Every pixel serves as a sample of the original image, with more samples often yielding more accurate renditions of the original. In color systems, each pixel often comprises three or four components, such as red, green, and blue, or cyan, magenta, yellow, and black. The intensity of each pixel is customizable.

• What is the various type of file formats of the image?

Images are organised and stored using standardised image file formats. When displayed on a computer monitor, image files consist of either pixel or vector data that are rasterized to pixels. Each of the grid's columns and rows represents a pixel, which is made up of numbers that indicate the brightness and color of a picture. There are hundreds of image file types, including proprietary ones. Images on the Internet are most frequently shown in JPEG, PNG, and GIF formats. In order to conserve memory and increase the number of files that may fit on a memory card or hard drive, digital cameras commonly save photographs in JPEG format, which is a lossy format.

• What is file compression?

"Lossy" and "lossless" file compression are the two options available. A few of the original pixels are really altered by lossy compression, and some information is lost. JPEG is the format used most frequently for lossy compression. The JPEG image straight from the digital camera is fine, but every time you save it again, more detail is lost. Multiple JPEG saves of the same file result in a considerable quality loss that cannot be reversed. Always preserve priceless originals in a lossless format, such as TIFF or PSD. Because the compression does not change any pixels, TIFF files can be modified and saved as many times as needed without losing any detail. TIFF files do not compress as well as JPG, which is the trade-off.

• What is DPI / PPI in the image?

• DPI means dots per inch. It is a way to gauge the quality or resolution of an image. The print quality is typically better the higher the dpi count. The incorrect word is still used when talking about the quality of digital images.

• PPI means pixel per inch. For instance, regardless of the printer's DPI capability, a 100x100-pixel image produced in a 1-inch square may be said to contain 100 pixels per inch. The measurement only makes sense when printing an image when used in this manner. When printed, high-quality images typically require 300 pixels per inch.