I tried to use different TWAIN-libraries and TWAIN-components to scan the chosen region of image. The acquisition frame has 4 params (Left, Top, Right, Bottom). Top and Bottom params are treated well. But there is a problem with Left and Right param. The acquired image is shifted towards center. Instead of left corner (Left = 0 inch; Right = 5 inch) I acquire center part. There is no such problem with Epson Perfection V100. Is there any way to solve this problem with Epson GT-S50?