User manual MUSTEK A3-USB

[. . . ] 10 Scan Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Appendices A: Scanning Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4 The TWAIN Dialog Box The TWAIN dialog box is a scanning option provided with your scanner. TWAIN is an industry standard that allows scanning directly into any TWAIN-compliant software. [. . . ] · · Gray Select Gray to capture images in shades of gray. Color Select Color to capture images in color. 12 Scan Source The Scan Source setting is used to select the type of document you will be scanning. · Reflective Use Reflective when scanning paperbased documents such as photographs or text. With the optional Transparency Adapter, you can also scan Positive and Negative transparencies. · · Positive Select Positive when scanning slides or transparencies. Negative Select Negative when scanning film negatives or similar negative transparencies. Resolution The Resolution, which is measured in dots per inch (dpi), determines the appearance of the image as it is displayed or printed. Images scanned at a higher resolution capture more information and therefore require more disk space for storage. You can select from a wide range of preset resolutions. 75 dpi (400%) 300 dpi (400%) Scan Size From the list of available sizes, select the size of the document you wish to scan. Custom will automatically be selected when you use the Crop Frame to change the image area to be scanned. Descreen A tool for reducing moiré patterns in scanned images of originals that were created by a halftone process. · · None Choose None if you want to scan images of photographic quality. Newspaper Choose Newspaper when the image is made up of coarse dot patterns commonly found in newspaper photos. 13 · · Magazine Choose Magazine when scanning images whose quality is similar to images found in glossy or waxcoated magazines. Art Print Choose Art Print when scanning images from very high quality art prints that show only very fine dots. Color Match This is an effective tool for ensuring that the colors captured by the scanner more accurately reflect the actual colors of the original image. Without color matching, the scanner captures a wider range of colors but these colors may not accurately match the true colors of the original image, making the scan appear different from the original. Color Balance This tool balances the lightest and darkest areas of an image so that they are evenly distributed. Output Scaling Output scaling allows you to enlarge/shrink the size of the final output image. Adjust the scaling by using the slide bar or typing the desired setting in the Output Scaling box. For example, setting the Output Scaling to 200% will double the amount of pixels contained in the image. Width and Height The Width and Height values show the dimensions of the image area inside the Crop Frame. After the highlight and shadow values are determined, use the gray triangle to roughly control an image's contrast. You can control each channel's levels if you scan in RGB. Eyedropper tools Eyedroppers are used to identify an image's hightlights and shadows. Click on the darkest area that still contains detail with the black eyedropper to set the shadow value. And then the lightest area with the white eyedropper to set the hightlight. This is the first step to control an image's overall tonal range. 16 Curve If your original is too dark or too light, you lose vital detail after scanning. [. . . ] Power off your computer and the scanner, and reconnect them by carefully following our hardware installation instructions. If your scans are looking bad on screen, but printing out satisfactorily, it could be your video driver that is causing the problem. Try changing the resolution and color settings in the "Display" portion of your Windows® control panel (after first making sure that you have the proper driver disks to restore your system to the original settings). You should be using a driver that provides 16+million colors, and a resolution of at least 800 x 600. [. . . ]