Resolution what is

Multiplying these numbers together produces 7,, total pixels. Since the photo contains just over seven million pixels, it is considered a "7 megapixel " image.

Digital camera resolution is often measured in megapixels, which is simply another way to express the image resolution. Every monitor and screen has a specific resolution. As mentioned above, an HD display has a resolution of x pixels. A 4K display has twice the resolution of HD, or x pixels. It is called "4K" since the screen is nearly 4, pixels across horizontally.

The total number of pixels in a 4K display is 8,,, or just over eight megapixels. Monitor resolution defines how many pixels a screen can display, but it does not describe how fine the image is. For example, a 27" iMac 5K display has a resolution of x while an older 27" Apple Thunderbolt Display has exactly half the resolution of x Since the 27" iMac is the same physical size as the Thunderbolt Display but has twice the resolution, it has twice the pixel density, measured in pixels per inch, or PPI.

Printer resolution is measured in terms of DPI or printer dots per inch, which is the number of dots of ink or toner that a printer can fit within an inch. A high printer resolution will result in a better quality of print — up to a point. While some printers offer higher printer resolutions, the human eye is not capable of distinguishing between images printed at 1, x 1, DPI and those printed at a higher printer resolution.

Printer resolution is important in applications that require the reproduction of high resolution artwork such as photographs onto labels; a high printer resolution ensures that the level of detail in the original digital image is recreated as closely as possible on the labels to produce sharp, crisp, and natural looking copies.

It is also important for the production of barcode labels and QR code labels ; if the printer resolution is too low, the quality of the barcode or QR code may be insufficient for a scanner to be able to read the barcode correctly. Recently Viewed Basket Checkout. Empty Basket Your basket is empty, please click here to visit our home page and look for products. Non-professional printers such as inkjet, laser, and other common printers can best print images that are at least to ppi and higher.

For images that just need to "look good", ppi will work. Photographic prints are recommended to be at least ppi. Images for large format poster printing can be around ppi depending on how close the image will be viewed. Screen images are different than images for printing because we must think about the pixel dimensions of monitors, TVs, projectors, or display, rather than PPI.

Use PPI for printed images, but use pixel dimensions of the image are what really determine the size of the image and quality of how it will display on the web or devices. The idea has been for many years that images should be saved with a resolution of 72 PPI.

Each monitor is different and has a different resolution, so it makes it difficult to design a website that contains images that will display perfectly on every type of display.

Over the years, technology has improved and so has the quality of our displays. Most popular are Apple's new retina displays that are on the most recent Macbooks, iPhones, and iPads. If you're a web developer, check out some ways people are designing for retina or high pixel density displays. Just like web images, images for projectors should match the pixel dimensions of the projector.

As with computer monitors, projectors also have their own display dimensions. For example, most aspect projectors have a display of x pixels, so an image that is x pixels with a 72 PPI resolution would be an ideal image size to be displayed from a projector.

Learn more about projector display. Web images work differently than printed images. With printed images, we must pay close attention to resolution to ensure we get a high-quality print.