Available in an expanded edition, the e-book A Basic Guide to Resizing Digital Images is a practical illustrated guide to resizing (up- and downsizing, enlarging and shrinking) digital images that are stored in bit-map or raster formats, including image formats such as jpeg, gif, tiff and png. It includes step-by-step instructions and the formulas needed to resize digital images to specific requirements. Among the areas covered are color depth; visual acuity; spatial resolution; digital scanning resolution; image resampling techniques; image resizing software applications, and pixels, resolution and image size. A new section discusses how to apply theory to achieve specific resizing goals. Andrew Reid; Imaging Associates International, Gordon, Australia, 2007; $14.95.