So now, let's get started answering the question "What is 4K resolution".ĤK resolution is a UHD resolution with approximately 4,000 pixels in width. LPI (Lines Per Inch) for display resolution, including screen resolution, television resolution, etc. DPI (Dots Per Inch) for output resolution, including printer resolution and projector resolution, etc. PPI (Pixels Per Inch) for input resolution, including scanner resolution, digital camera resolution, etc. Strictly speaking, only when there is "no flicker refresh frequency", the highest resolution a monitor achieves can be called the real highest resolution of this display.Īs for the measurement of resolution, it is various in terms of different use, input, output, or depending on different devices. Other factors are dot pitch, bandwidth, and more importantly the refresh frequency. On a smaller screen, the image we see is sharper. The display resolution is related to the display size, the same resolution in screens of different sizes will also influence what we see. Each display has its own highest resolution and is compatible with other lower display resolutions, so a display can be set in many different resolutions. The more it can display, the more clearly we can see from the screen, and fewer pixel blocks we can see when getting closer. For instance, if a computer monitor's resolution is 800×600, it can display around 0.48 megapixels. The display resolution shows a screen's capability that how many pixels it can display. Besides image quality, it also influences the size of an image together with image dimensions – the size goes larger along with higher resolution and bigger dimensions. Generally, the higher the PPI is, the more details are stored in the image, and thus the picture is more elaborated. PPI (pixel per inch) is the measurement of image resolution that indicates the pixel density. Image resolution means the number of pixels, the basic unit of programmable color in one image.
To make it more precise, the resolution needs to be classified into image resolution and display resolution. However, it does not merely matter the number of pixels. It decides how clearly and sharp a picture is. Resolution generally refers to the total number of pixels in an image, expressed in terms of the pixel number in width and height, e.g. Before we get to know what 4K resolution is, we probably first need to understand what the resolution is.