To open the Photo Editor, go to the Photo Viewer and click the blue icon with the pencil.

The fully-featured photo image editor allows you to make many changes to captured images, without having to rely on third party software.

The following options are available:
Resize
Resize the photo, reducing the file size of it.
Canvas
Resize the drawing area of the photo
Rotate 90°
Rotates the photo 90 degrees clockwise.
Rotate 180°
Rotates the photo 180 degrees clockwise.
Rotate 270°
Rotates the photo 270 degrees clockwise.
Round Corners
Applies a rounded corner effect to the image.
Flip Horizontal
Flips the image upside-down
Flip Vertical
Flips the image rightside-left
Crop
Crops an area of the image and removes the area not selected.
Draw Text
Adds customizable text to the image
Draw
Draw lines on top of the image.
Shape
Add a shape to the image.
Hue Shift
Shifts the hue of the image, changing the colors.
Saturation
Shifts the saturation of the image, to make it more or less vibrant
Contrast
Shifts the contrast of the image, changing the contrast ratio.
Invert Colors
Invert the colors of the image to their opposites.
Sharpen
Sharpens the image. Sharpening too much can create artifacts.
Blur
Blurs the image.