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3872 x 2594 = 10,043,968 pixels. The general digital ** sets the PPI at about 300, which is the so-called "standard" resolution.

PPI stands for pixel per inch, which is how many pixels are made up of each inch in length.

DPI is the abbreviation of dot per inch, which is the number of dots on each inch of length that are used on printers. The unit used for digital ** should be PPI.

Assuming that it is 300ppi of 3872*2594 pixels, it should be able to be rinsed into:

One inch = millimeter;

If you want to resample ** to a size larger than the above, it is recommended that you use Photoshop to resample ** to the desired size in the form of 300ppi, fixed and matching size.

The PPI value depends on the size of the ** being rinsed and the viewing distance. The closer you get to see it, the higher the PPI will be. Rinse larger than A2**, generally use 240ppi, to see such a large picture**, we can't just put our eyes only 300 mm away from **.

Generally, professional ** uses 1440dpi to print 300ppi **. However, this is not a fixed conversion formula and should be based on individual needs.

Resolution dpi = display size dpi is the meaning of pixels in inches and how many dots are on an inch.

The difference between a dot and a pixel.

Dot vs. image resolution in DPI.

The pixel in the pixel is two concepts that are easy to confuse, the dot in dpi can be said to be the smallest display unit of a hardware device, and the pixel can be both a dot and a collection of multiple dots. When the scanner scans the image, each sample point of the scanner corresponds to each pixel of the formed image, so the DPI value set at the time of scanning is equal to the PPI value of the image formed by scanning, and the two can be equated. But in many cases, the difference between the two is considerable.

For example, if an image with a resolution of 1 ppi is output on a 300 dpi printer, each pixel of the image corresponds to 300 300 points at the time of printing. There are similar problems in the use of computer monitors, such as the effective display area of the 12-inch display is about 200mm 160mm, if the light spot of the phosphor screen.

The diameter is, and the maximum number of light spots that can be displayed on the phosphor screen is 640 (200, and the corresponding resolution is 80dpi. This 80dpi comes like this: 640dot (200mm) or 480dot (160mm.)

In this case, the card is displayed.

The display header mode can be set up to 640 480, in which case 1 pixel consists of 1 dot. If you adjust the graphics card's display sliding mode to 320 200, one pixel will correspond to four points of light when displaying a 320 200 image. Quote).

DPI is the number of dots per inch, which is not directly related to the resolution, but only a parameter that affects the print size. For example, a 6-inch**, the dpi is 300, if the dpi is manually changed to 600 and the resolution remains the same, then the corresponding to this ** is 3 inches**.

dpi is the pixel per inch of the cover, that is, the scanning accuracy. The lower the dpi, the lower the clarity of the scan, due to the influence of the network transmission speed, the ** used on the web is 72 dpi, but the flushing ** can not use this parameter, it must be 300dpi or higher 350dpi. For example, if you want to develop a 4*6-inch **, the scanning accuracy must be 300dpi, then the file size should be (4*300)*(6*300)=1200 pixels*1800 pixels.

Unit of measure. DPI is originally a unit of measurement in printing, which means the number of dots per inch of liquid that can be printed (dot per inch). However, with the rapid development of digital input and output devices, most people also use the resolution of digital images as DPI;

However, more serious people may notice that the dots (dots and dots) calculated at the time of printing are not the same as the pixels displayed on computer monitors, so more professional people will use PPI (pixel per inch) to indicate the resolution of digital images to distinguish between the two.

dpi stands for resolution.

Pixels can be represented by a number, such as a 0:3 megapixel digital camera, which has a rating of 300,000 pixels, or it can be represented by a pair of numbers, such as a 640x480 display, which represents 640 pixels horizontally and 480 pixels vertically, so its total is 640 480 = 307,200 pixels.

Display resolution is the number of pixels displayed on the screen, resolution 160 128 means that the number of pixels in the horizontal direction is 160, and the number of pixels in the vertical direction is 128. When the screen size is the same, the higher the resolution, the more detailed and delicate the display effect will be.

Raw pixels

Because the resolution of most computer monitors can be adjusted by the computer's operating system, the pixel resolution of the display may not be an absolute measure. Modern LCD displays are designed to have a pristine resolution, which represents a perfect match between the pixels and the three-element group.

The cathode ray tube is also a red-green-blue fluorescent hole disturbance group, but they do not tremble with the image pixels, and cannot be compared with the pixels. A display with a native resolution of 1280 1024 looks best at a resolution of 1280 1024 and can also be used to display 800 600 by representing a pixel with several physical trielement groups.

A common unit used to represent the resolution of a bitmap image is "dpi".

A bitmap image, also known as a bitmap image or raster image, is made up of individual points called pixels (** elements); When working with bitmaps, the quality of the output image is determined by the resolution set at the beginning of the processing process.

The units that describe resolution are DPI, LPI, PPI, and PPD, with dpi being the commonly used unit. dpi means "dots per inch" in Chinese and is a unit of measurement used for dot matrix digital imagery, which refers to the number of points sampled, displayed, or output in each inch of length.

The dots can be arranged and dyed differently to form the pattern. When you zoom in on the bitmap, you can see the myriad of individual squares that make up the entire image. The effect of increasing the size of a bitmap is to increase the size of individual pixels, making lines and shapes appear uneven.

If it's from a slightly farther position

The colors and shapes of the bitmap image appear to be continuous. Bitmaps taken with digital cameras, scanned by scanners, and computer screenshots are all part of a bitmap.

Bitmaps are characterized by the ability to express the changes in the color calendar and subtle transitions of colors, producing realistic effects, but the disadvantage is that the position and color value of each pixel need to be recorded when saving, which occupies a large storage space.

Commonly used bitmap processing software includes Photoshop (which also includes vector functions), Painter and Windows painting tools, etc., while Adobe Illustrator is vector graphics software.

300dpi is 300 pixels. The principle of pixels: pixels can be represented by a number, such as a "megapixel" digital camera, which has a rating of 300,000 pixels; It can also be represented by a pair of numbers, such as "640x480 display", which represents 640 pixels in landscape and 480 pixels in portrait orientation (like a VGA display), so its total number of dispersions is 640 480 = 307,200 pixels.

Pixels

Color sampling points of digitized images, such as JPG files commonly used in digging web pages, are also known as pixels. Due to the different types of computer monitors, these may not correspond to some areas of the screen pixels. In areas where this distinction is clear, the dots in the image file are closer to the texture elements.

The above content reference: Encyclopedia - Pixel.

The converter for resolution and dpi is calculated as follows:For example, a machine, the screen is 4 inches, the resolution is 480x800, because I don't know the side length, it must not be calculated separately, 4 is the diagonal length, then directly use the Pythagorean theorem to calculate the diagonal pixels, divide by 4, and calculate it is about dpi = 233 pixels inches.

Resolution refers to the number of pixels that an image or display has in terms of length and width. For example, the resolution is 1920x1080, which means that this is composed of 1920 pixels in landscape and 1080 pixels in portrait, which contains a total of 1920x1080 pixels.

Definitions:

When we need the mouse to move a fixed distance on the screen, the high dpi mouse will move a shorter physical distance than the low dpi mouse. A mouse with a high dpi often needs to move a small distance to move the cursor from one edge of the screen to the other. A mouse with a low DPI often needs to move several times more than a mouse with a high DPI to accomplish this.