Introduction to PhotoKit Color 2.0 - Pixel Genius
Introduction to PhotoKit Color 2.0 - Pixel Genius
Introduction to PhotoKit Color 2.0 - Pixel Genius
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Pho<strong>to</strong>Kit <strong>Color</strong> <strong>2.0</strong>: Saving Images<br />
Once you learn how <strong>to</strong> use Pho<strong>to</strong>Kit <strong>Color</strong> <strong>2.0</strong>, saving your images will be a very important<br />
consideration. If you open up an image from a basic, compact digital camera, the<br />
odds are that the file format is JPEG, which is a common file format for digital cameras.<br />
JPEGs are useful for situations where an image's file size is important such as when<br />
being written <strong>to</strong> a compact flash card or put up on a web site. However, JPEGs are not<br />
an ideal file format for digital imaging.<br />
The way that JPEGs are created is <strong>to</strong> compress the color information while trying <strong>to</strong><br />
preserve the luminance information. This compression process is called "lossy" because<br />
some information in an image is 'lost'. While the initial compression you get from a digital<br />
camera is not severe, opening a JPEG in Adobe Pho<strong>to</strong>shop and re-saving as a<br />
JPEG will add <strong>to</strong> the loss of image integrity. Repeated opening, modification and resaving<br />
should therefore be avoided.
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