User manual EPSON TWAIN PRO

[. . . ] ® TWAIN Pro SCANNER UTILITY PROGRAM All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. No patent liability is assumed with respect to the use of the information contained herein. Neither is any liability assumed for damages resulting from the use of the information contained herein. [. . . ] When you click this button, the following window appears. 3-10 Using EPSON TWAIN Pro Auto Focus: Clicking this button adjusts the focus position automatically. This works exactly the same way the Auto Focus button in the Adjust dialog box works. Focus Position: You can select from -3. 0 (lowest) to 9. 0 (highest) by moving the slider, clicking the left or right arrow, or typing a value from -3. 0 to 9. 0 in increments of 0. 1 in the Focus Position box. By adjusting the focus position, you can reduce the occurrence of moiré patterns when scanning. Note: If TPU (for Neg. Film) is selected in the Document Source, the value of the Focus Position is automatically set to 2. 5. If Flatbed or ADF (Single-sided or Double-sided) is selected, the value is automatically set to 0. Using EPSON TWAIN Pro 3-11 Selected area for focusing window: This window shows a preview image of the active marquee. If there is no marquee in the Preview window, the focus marquee window shows a full preview image. To change the image in the focus marquee window, change the marquee or the image in the Preview window. Focus Line: The focus line appears at the center of the focus marquee window (default). If you move the cursor over the focus line, the cursor will change to a "hand" cursor. You can then move the focus line by clicking and dragging the "hand" cursor to a new part of the image. Confirm: Click this button to compare the new image that you just modified (shown in the Result window) with the unmodified image (shown in the Before window). Result window: This window shows the image whose focus line position you just modified. Before window: This window shows the image with the focus line in the default position. The focus line determines what point of the image is used. 3-12 Using EPSON TWAIN Pro Auto Exposure Clicking the Auto Exposure button automatically adjusts the exposure for an image. This means the Exposure, Highlight, Gamma, and Shadow settings in the Image Controls dialog box and the Gray Balance Intensity in the Color Adjustment dialog box are automatically set. Note: The Auto Exposure feature is automatically enabled after a full page preview and zoom preview. Image Controls Clicking the Image Controls button causes the following dialog box to appear: Using EPSON TWAIN Pro 3-13 Note: G The Exposure setting can be changed from -10 to 20. G G Be aware that the Auto Exposure feature overrides any Image Controls setting you make. If the Pixel Depth setting is set to Black & White and the Halftone setting is set to None in the Image Type dialog box, the Exposure, Gamma, Highlight, Shadow, and Sharpness settings are dimmed and cannot be selected. The effects of settings you make appear in the Preview window. G Exposure: You can select from -10 (darkest) to 20 (brightest) by moving the slider or clicking the left or right arrow. Exposure works as a combination of the Highlight and Shadow settings to determine the overall brightness or darkness of an image. Gamma: You can select from 50 (lowest) to 500 (highest) by moving the slider or clicking the left or right arrow. Gamma determines the amount of contrast in your image. [. . . ] Moiré (cross hatch) patterns appear in the scanned image. This problem occurs when images that include halftone patterns are scanned. To minimize moire' patterns, try any of the following solutions: G G G G G Place a transparent sheet between the document and the document table to slightly defocus the image. Change the Focus position setting. Troubleshooting 4-3 4-4 Troubleshooting Glossary additive primary colors Primary colors which produce white when mixed in a certain proportion. [. . . ]