Sunday 8 November 2015

The Screen Resolution and Colors

The image we see on a television or any screen is shown in pixels. The screen resolution is the total number of pixels. The more the pixels are, the better the screen resolution is .
It is usually quoted as width × height, with the units in pixels: for example, "1024 × 768" means the width is 1024 pixels and the height is 768 pixels.300 pixels per inch is a standard size for printing in a magazine.






This is the color wheel.  It consists of RGB and CMYK


RGB:
RGB is the color scheme that is associated with electronic displays, such as CRT, LCD monitors, digital cameras and scanners. It is an additive type of color mode that combines the primary colors, red, green and blue, in various degrees to create a variety of different colors. When all three of the colors are combined and displayed to their full extent, the result is a pure white. When all three colors are combined to the lowest degree, or value, the result is black. Software such as photo editing programs use the RGB color mode because it offers the widest range of colors

CMYK

If printers are using a digital printing method, they would print color on paper using CMYK colors. This is a four color mode that utilizes the colors cyan, magenta, yellow and black in various amounts to create all of the necessary colors when printing images. It is a subtractive process, which means that each additional unique color means more light is removed, or absorbed, to create colors. When the first three colors are added together, the result is not pure black, but rather a very dark brown. The K color, or black, is used to completely remove light from the printed picture, which is why the eye perceives the color as black





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