Shot Marking is one of the core features of the LONGSHOT app. It allows you to keep track of your shots by simply tapping on them as they appear. As you tap, the app will place a semi-transparent marker over the image and will auto number the markers as well. You can adjust the marker size and color via the options menu as well as mark groups of shots different colors. Shot markers cannot be moved once they have been placed but you can undo shot markers with the undo button or remove all markers by holding the undo button.