Plans allows you to take informative photos to add clarity in context to your sheets. Just select the photo annotation, tap where you'd like to place it, take the photo or add it from an existing album on your device. Then if you or one of your colleagues from the field or office would like to view it, all they need to do is tap the annotation. You can also attach photos to existing annotations. You can tell when an annotation has an attached photo by checking for the attachment button next to the annotation.
Add annotated photos, audio clips, or even videos to plans and revisions to encourage collaboration.