You can rotate, enhance, remove red-eye, and crop photos. Enhancing improves a photo’s overall
darkness or lightness, color saturation, and other qualities.
Edit a photo: While viewing a photo in full screen, tap Edit, then choose a tool.
With the red-eye tool, tap each eye to correct it. To crop, drag the corners of the grid, drag the photo
to reposition it, then tap Crop. You can also tap Constrain when cropping, to set a specific ratio.