User manual UMAX ASTRA 6400

[. . . ] Astra 6400 & 6450 OWNER'S GUIDE Trademarks UMAX is a trademark of UMAX Technologies, Inc. IBM PC/AT is a trademark of International Business Machines Corporation. MS-Windows, Windows, and MS-DOS are trademarks of Microsoft Corporation. Other names and trademarks appearing herein are trademarks of their respective holders. Copyright ©1999 UMAX Technologies, Inc. [. . . ] Moving the slider on the scroll bar to the left increases the brightness in shadowed areas. Gamma Bar The Gamma bar alters the mid-range gray tones in the scanned image. All optical devices, such as monitors and scanners, have some variance in their light sensitivity characteristics. To get a scanned image with good results, VistaScan provides gamma adjustment capabilities so you can compensate for this variance in your scanner. UMAX Astra 6400/6450 Owner's Guide Moving the slider on the scroll bar to the right increases the brightness of the mid-range gray tones. Moving it to the left decreases the brightness of the mid-range gray tones. Reset Button Click the Reset button to cancel the changes and return the value to the default setting. Adjusting the Image Tones The Curve command is another way to make precise adjustments in the highlight, midtones, or shadow levels in your images. You change the values by altering the shape of the curve that represents the brightness values of pixels. Click Reset to cancel the changes and return the value to the default setting. Adjusting the Color Balance The Color Adjustment feature controls the hue and saturation of a particular color. When you click on the Color Balance tab from the Color Adjustments panel, a continuous color spectrum wheel appears. 43 When you click in the wheel the image tones are shifted to the particular hue that is represented in that area. Click the Reset button to cancel the changes and return the value to default setting. Rotating/Inverting an Image You can rotate an image clockwise or counter clockwise, and you can flip images 180 degrees vertically or horizontally. UMAX Astra 6400/6450 Owner's Guide The following lists the possible rotate and flip selections: · · · · · · · · Flip/Rotate Horizontally -- flips the image horizontally and rotates it 90 degrees counter clockwise. Inverts an image -- changes all the dark tones in an image to light tones, and all of the light tones to dark tones. This option can NOT be reversed using the Edit menu Undo command. Clicking on the image that shows the desired orientation rotates or flips the image. Clicking the Reset button cancels the rotate or flip action and returns the image to the original orientation. Using the Universal Transparency Cover (UTC) The Astra 6450 scanner is equipped with an UTC, which gives you the capability to scan slides and transparencies. Negative film normally contains an emulsion that affects the color of the image when scanned. Other transmissive images may appear clear, but negatives often have a muddy, brown, gray or orange tint to the image. The VistaScan software contains a "negative" option for compensating for the inherent color bias of the emulsions. VistaScan is able to neutralize the cast of whichever emulsion type is applied to the negative, based on the type of the negative. To achieve the optimum scan from a negative: · Scan negatives and slides at the highest optical resolution the scanner supports, which is 600 dpi for this scanner. You should also try scanning at 1200 dpi to see which resolution works best for you. 45 Make sure you select only the image when cropping, and do not include any extra background material. Inclusion of the non-image slide material within the cropping area will degrade the scan quality. Using VistaAccess ­ Direct Access VistaAccess is a utility that provides instant access to several VistaScan applications. [. . . ] Should any defect(s) be discovered, the product may be returned either to the manufacturer or an authorized UMAX service center. If you are returning product for repair, please be sure to do the following: 1) Call UMAX Technical Support Monday-Friday and 9 A. M­ 5 P. M. (CST) at (214) 739-1915 and obtain an RMA (Return Merchandise Authorization) number. 2) Clearly write your RMA number on the OUTSIDE of the box or package next to the shipping label. [. . . ]