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Hour 4. Importing Source Images > Changing Image and Canvas Sizes

Changing Image and Canvas Sizes

The size of the image you import from your digital camera or digital video system is directly dependent on the file resolution. My favorite camera, a Nikon CoolPix 990, gives me the same number of pixels per image, regardless of the resolution I use. It just makes the picture correspondingly larger or smaller. If I shoot an image at my usual 1260×980 resolution, when I open it in Elements, it can be 17.7×13.3 inches at 72 dpi, or it can be 4.2×3.2 at 300 dpi, depending on how I have chosen to save it. Because I hardly ever need a picture as big as 17 inches, I can reduce the size of the original to something more reasonable and increase the resolution as needed with no loss of quality.

Remember that the amount of detail you see in an image depends on its pixel dimensions, whereas image resolution controls the amount of space the pixels are printed over. The difference between a 72 dpi image and a 300 dpi image that are both the same printed size is that the latter has smaller dots and more of them, hence greater detail.


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