High-quality images are not only pleasing to the eye, but also allow you to evaluate the photo from an artistic point of view. In order for an image that looks very beautiful on the screen to look just as beautiful on paper, you need to know what the image resolution is.
What does the photo consist of?
First you need to figure out what photography is. Those who have come across the printing of an image more than once noticed that its dimensions are indicated by two numbers. These numbers mean the height and width of the image in pixels, and when multiplied, as is known from mathematics, the area.
Pixels, in turn, are many points. And a photograph is made up of these dots, each of which has its own color and hue. The more dots, the deeper and better the picture will be.
A person perceives any image by sight. And even the healthiest people have limited vision. And this limitation is about 70 dots per 1 cm or 200 per 1 inch (as it is customary to express resolution). If there are more points in a centimeter, then the human eye will perceive them as a solid line.
What is DPI?
It is on the possibilities of vision that the printing principle is built. Almost any illustration in printed matter has a resolution of 90 to 300 dpi. This dependence is called dots per inch, or DPI for short.
DPI has its meaning only when the image is directly printed. A photograph that is on a computer screen does not have a specific size: length and width. And as mentioned earlier, these two parameters are the main ones when calculating the expansion.
The main task of the extension is to make a high-quality picture when printing it on a printer.
How to take a high-quality picture?
To prepare a photo for printing, you need to make some settings in the photo editor. The most suitable editor is Photoshop. After you open the photo in the program, go to the "Image size" section.
The window that opens will show three main fields: width, height and resolution. When you change the resolution, the height and width will change, and vice versa. If you check the box next to "Track changes", then you can adjust the dimensions independently of each other.
The optimal resolution for good photography, which is supported by most printers, is 300dpi. But the smaller the image should be in the end, the less resolution you need, and vice versa. Before printing a large format photo, ask about the printer's specifications: the main parameters are PPI (which means the maximum possible resolution) and the number of colors that are used for printing. To get the true DPI of a device, divide the PPI by the number of colors.
