Display form of photographic works

BMP is a Windows bitmap, which can store a single raster image with any color depth (from black and white to 24-bit color). Windows bitmap file format is compatible with other Microsoft Windows programs. It does not support file compression, nor does it apply to web pages. Generally speaking, the disadvantages of Windows bitmap file format outweigh the advantages. To ensure the quality of photo images, please use PNG, JPEG and TIFF files. BMP file is suitable for wallpaper in Windows.

Advantages: BMP supports 1 bit to 24-bit color depth. BMP format is widely compatible with existing Windows programs (especially older programs).

Disadvantages: BMP does not support compression, which will make the file very large. The Web browser does not support BMP files.

TIFF (TaglmageFileFormat) image file is a common image file format developed by Aldus and Microsoft for desktop publishing system. TIFF format is flexible and changeable. It defines four different formats: TIFF-B is suitable for binary images, TIFF-G is suitable for black and white gray images; TIFF-P is suitable for color images with palette; TIFF-R is suitable for RGB true color images.

TIFF supports a variety of coding methods, including RGB compression, RLE compression and JPEG compression. TIFF is one of the most complex image file formats, which is extensible, convenient and modifiable, and can be provided for running and image editing programs in IBMPC and other environments.

JPEG format is the most popular image format on the network at present, which can compress files to a minimum. When stored in JPEG format in Photoshop software, the compression level of 1 1 is provided, which is represented by 0- 10. Level 0 has the highest compression ratio and the worst image quality. The compression ratio can reach 5: 1 even if the quality maintenance with almost no loss of details is adopted. When saving in BMP format, you will get a 4.28MB image file. When saved in JPG format, the file size is only 178KB, and the compression ratio reaches 24: 1. After many comparisons, eight-level compression is the best ratio of storage space and image quality.

Advantages: Photographic works or realistic works support advanced compression. The file size can be controlled by variable compression ratio. Support interleaving (for progressive JPEG files). JPEG widely supports Internet standards.

Disadvantages: Lossy compression will reduce the quality of the original image data. When you edit and resave a JPEG file, JPEG will mix the quality of the original picture data. This decline is cumulative. JPEG is not suitable for simple pictures with few colors, similar colors in a large area or obvious brightness difference.

Like jpeg, jpg is TIFF JPG BMP from high to low.

It is best to use TIFF when retouching, with high tolerance, and then save it as JPG, which is convenient for browsing and spreading.