After you take all pictures or choose them from the gallery and proceed to the image editor interface:

• Use the Crop function to edit the result of the auto-crop or manually configure the edges of the page.
• Press Left or Right to rotate the image.
• Use the Filters function to change the image appearance:
  • Original - no filters applied;
  • Black and white - makes a colored image black-and-white and increases contrast;
  • Grayscale - makes a colored image black-and-white;
  • Color - increases contrast of a colored image.

Last used filter will be applied to all later added images.

•  Press More to Retake photo or Delete a specific page.

Choose the function you need and press the red Apply to all button to change the appearance of all pages.