Similarly, mosaic image composed of colored pixels, folding in the picture. If you increase the pixels, they will look like a loose set of colored squares. Reduced in size, the pixels together to create image that the world knows as a normal photo. Photoshop cheats" vision, borrowing fiction technique as old as the art of Mycenae and . Of course, between the ancient mosaics and there are pixels differences. Pixels can take any of the 16 million different colors. Antique same mosaic consists mainly of pieces of granite and sandstone of various shades, with a few patches of blue. In addition, we can work with layers, separates colors and crop the electronic images.

Ancient manuscripts show that such processes were not available ancient masters. However, I am getting ahead of myself. Instead, we consider the inverse the relationship between image size and resolution. Size and resolution If you have not guessed, we will explain what the term means the physical size of the image image. Resolution – the number of pixels on linear inch. We're talking line, because the measuring point in a straight line. If the image resolution 70 pixels per inch, we get 5,184 pixels per square inch (72 pixels * 72 pixels = 5184). Taking into account that the number of pixels in the image is fixed, increasing the size of the image decreases its resolution, and vice versa. Consequently, an image that looks good on a postage stamp, will look "jagged" when to print it on a poster size 28 * 43 cm One inch in the smallest image contains twice as many pixels vertically and twice as many pixels horizontally than an inch in an image of medium size, ie four times more per square inch.