• The image is too dark and low-contrast.
  Solution: Try using additional light sources. Otherwise, open up the aperture.
• The image is not sharp enough.
  Solution: Autofocus may not work properly in poor lighting or when trying to shot the document from a close distance. In poor lighting conditions, try using an additional light source. When shooting a document from a close distance, try using the Macro (or Close-Up) mode. Otherwise, focus the camera manually if manual focus is supported by your camera.
  If only part of the picture is blurred, try a smaller aperture. Increase the distance between the document and the camera and use the maximum zoom. Focus on a point somewhere in between the center and a border of the image.
• The flash causes a glare in the center of the picture.
  Solution: Turn off the flash. Otherwise, try shooting from a greater distance.
• The text close to the margin is distorted.
  Solution: Select Tools>Options and click the Scan/Open tab. Under Image processing, select Straighten text lines.

For more information about the settings of your camera so that you can get document photos suitable for OCR, see the "Using a Digital Camera to Photograph Texts".