What is resolution?
Resolution pertaining to web sites is commonly the quality the images and videos on your site. Resolution is measured by pixels. These days two very common screen resolutions for users are 1024×768 or 1280×1024. For example, a user with a screen resolution of 1024×768 would have 1024 pixels horizontally on their monitor and 768 pixels vertically. For a picture to look good on a web site, the resolution of that picture has to be at least the original resolution of the picture. For example, if you take a picture with your digital camera and the size of the picture is 400×300 pixels that picture will look good at that size. However, if the picture were to be blown up to 800×600 pixels, it would look fuzzy and pixilated. Pictures can always be made smaller and still look great, but not bigger. When supplying the pictures for your site it is important that they are of a sufficient resolution to be displayed professionally. The same goes for video.
A – Resolution is the amount of resolvable detail in a picture, or the maximum number of pixels that can be distinguished either horizontally or vertically. Horizontal resolution is expressed as the number of distinct vertical resolution is expressed as the number of horizontal lines that can be seen in the picture.
Resolution – An important feature of a scanner is resolution, which is the amount of detail recorded by the scanner. Resolution is measured in dots per inch (dpi). The greater the dpi number, the higher the resolution. Optical resolution – this is the amount of information that a scanner’s optics can sample or “see” as the CCD moves vertically across the image. A 24-bit scanner, for example, typically has an optical resolution of 300 dpi, while 30-bit or 36-bit scanners typically have optical resolutions of at least 600 dpi. Interpolated resolution – Interpolated resolution is accomplished in software by surrounding pixels already seen by the scanner with new pixels that are mathematical averages of the original pixels. Interpolation can be helpful when enlarging images to retain clarity, or when scanning black-white images or fine line art to produce smoother lines. In the case of resolution more isn’t necessarily betteroptical resolution will always be the best resolution. Higher-res
Resolution is a concept that continues to baffle even graphic artists. In the context of editing photos, resolution is a measurement of the output quality of an image. The most common units to measure resolution include: PPI (pixels per inch), DPI (dots per inch), LPI (lines per inch), and SPI (samples per inch). For our purposes, we will focus on DPI and PPI because that is what you will be dealing with most often when printing photographs.
