Acer Film Scanner User Manual
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Contents
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English31Curve buttonThe Curve tool is used to adjust the brightness properties ofmidtone pixels in an image. The following dialogue box willappear after you click this button:Below is an introduction to eachcomponent in the dialog box and how touse the Curve tool to adjust an image:Color Channel boxUse this box to select the color channel to be adjusted.This allows you to adjust the curve property of each colorchannel respectively.To three color channel simultaneously, choose Masterchannel.Tonal MapThe x-axis in the Tonal Map represents the inputbrightness level of the pixels in an image, and they-axis represents the output brightness level of theimage. By clicking and dragging the curve tochange its shape, you can adjust the differencebetween input and output brightness level of animage without making too much modification to thedark and bright areas. If we compare the followingimages and their Tonal Maps: |
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