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For print output, you’ll need to be aware of You’ll need to be aware of the pixel dimensions, or pixel count, of an image. When working in Photoshop and for Web output, Pixels, short for “picture elements,” are the building blocks that make up a digital image - the tiny individual dots that a digitalĬamera uses to capture a scene or that a computer uses to display images onscreen. Resampling isn’t a problem for Web output. The file is resampled, although it can be remedied somewhat by applying a sharpening filter afterward (see pages 296–300). This can be a problem for print output, depending on the output resolution and how drastically Way to get those pixels back is by clicking a prior state on the History panel before closing the file. Resample a file as you decrease its resolution (downsample it), and pixels will be deleted. If you resample a file as you increase its resolution, pixels will be added to it and its storage size will You will need to resample a file if it contains too few or too many pixels to meet the resolution requirement of your target In either case, so the image quality isn’t diminished. Size (and thereby lower the resolution) or increase the resolution (and thereby lower the print size). You can keep the pixel count constant as you increase the print Pixel count to increase its print size or print resolution. In Photoshop, you can take advantage of a file’s high

Some input devices (e.g., digital cameras that capture 8 megapixels of data or more and high-end scanners) produce files withĪ higher pixel count than is needed for most standard printing devices.

The resolution (or “res,” for short), is the fineness of detail in a document, and is measured in pixels per inch (as in 250.A file’s pixel count (or pixel dimensions) is arrived at by multiplying its pixel height and width (as in 3000 × 2000 pixels).In this section, you’ll encounter three related terms: Learn More Buy Changing the document resolution and dimensions Photoshop CS5 for Windows and Macintosh: Visual QuickStart Guide