Acer Film Scanner user manual Level button, Histogram

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English

Level button

Clicking on the Level button, and the Level dialog box will appear:

The Level dialog box includes several useful tools that you can use to check the color level information of the image and adjust the image quality. Each component in the dialog box and how they work to affect the image is described below.

Color Channel box

Use this box to select the color channel to be adjusted. This allows you to adjust the histogram property of each color channel respectively.

Histogram

The Histogram displays the distributing status of dark and bright pixels in an image. The x-axis is divided into 256 equal portions, representing the brightness level of 0 to 255. The y-axis is used to represent the quantity of pixels in each brightness level. If we compare the following two images and their histograms:

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Contents Film Scanner Page English Important Safety Instructions English FCC Information Table of Contents Working with Album MiraPhoto Quick Reference Map Memo Introduction FeaturesHardware Introduction Friendly and Smart DriverEject button LED indicatorsPower button Holder insertion slotScsi ID selector Power cord receptacleScsi in connector Ventilation holes300mm 200mm Scsi OUT connectorSoftware Introduction Install the Scsi interface card InstallationConnect the scanner to your computer Install scanner driver and other applications Install Scanner Driver SoftwareTest the scanner Place original on the holder Making Your First ScanIf you want to scan a filmstrip Insert the filmstrip holder into the holder insertion slot If you want to scan slides Scan To preview manually To use Scan buttonEdit Memo Using MiraPhoto Menu Bar Scan Size… Monitor Gamma Scanner Info… ContentsFilm Type Auto PreviewCombo Boxes Image Thumbnail AreaEnglish Resolution box Film Selection Area Control Buttons Film Type button Tool ButtonsFlip button Mirror button Rotate buttonCrop button Invert button Color Enhancement Tools buttonBrightness control Brightness/Contrast buttonContrast control Color Balance button Adjustment AreaChannel Lightness Bar Color Adjustment buttonEntry Box Color Channel box Curve buttonTonal Map Input/Output Status Area Histogram Level buttonAddition, if we take a look at the two images below Shadow Midtone Highlight Threshold Output Level box Input Level boxFilter button Color Wizard button Switch buttonApply all button Info button Preview AreaMemo Introduction Photo ExpressTool Bar Workspace Getting StartedEnglish Getting Images To create a new AlbumPrinting album thumbnails To add new images to an albumWorking on Images To re-align a photoTo re-size your photo To trim your photoUser defined option Printing Images To print an imageTo save a photo Create Calendars To create calendarsMorphing Photos To morph an imageWorking in Project Mode To move one object over another To replace images in a templateApply To add special edge effects to a photo objectTo add frame to a photo object Adding DecorationPrinting Templates To print a template as name cardsSharing Templates To e-mail a templateTo fax a template To output a template as a WebTroubleshooting Troubleshooting and FAQFAQ Re-packing Directions Service InformationAppendix Product Specification