| Zoom Tool | A tool used for magnifying a digital image on the monitor |
| Zoom ratio | The change in focal length |
| zoom lens | lenses with a variable focal length. They allow the photographer to remain in the same position whilst varying angle of view, or image size. |
| Zoom | To change the image size without changing subject to camera distance |
| ZIP | Lossless compression; supported by PDF and TIFF file formats. Like LZW, ZIP compression is most effective for images that contain large areas of single color. |
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