User manual UMAX ASTRA 6400

[. . . ] Astra 6400 & 6450 OWNER'S GUIDE Trademarks UMAX is a trademark of UMAX Technologies, Inc. Astra 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. [. . . ] The maximum shadow setting is 254 (black); the minimum setting is 0. 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. Using this feature corrects the gray/color values in an image. 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. Flip Horizontal -- flips the image horizontally. Rotate 90 CCW -- rotates the image 90 degrees counter clockwise. Rotate 90 CW -- rotates the image 90 degrees clockwise. Normal -- does not rotate or flip the image. Flip Vertical -- flips the image vertically. Rotate 180 -- rotates the image 180 degrees 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. [. . . ] (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. 3) Include a copy of the bill of sale with the returned product. 4) Unless otherwise instructed, do not return any manuals or software when returning items for repair. [. . . ]