Turn on the microscope and wait until the Viewing/Snapshot mode appears. Briefly press the mode “M” button two times, switching first to the Video mode and then to the Playback mode. You will see thumbnails of the snapshots and videos you have taken.
Use the up/down arrow keys to select one image,. Now press the M key and either the up or the down arrow key. The Play and Setup Tabs will be displayed; the Play tab should be selected and appear blue. (If Play is not selected, press and hold the up arrow key until the Play tab turns blue indicating it is selected.)
The first item in the Play menu is Delete. If it is selected, it will be green in color. If not, then use the up-down arrows to select it.
Press the Snapshot button (with the camera on it). You are in the Delete menu. Choose the option you want from Single, All, or Select. Press the Snapshot button again to perform the deletion.