Chapter 6 Operation Method4 Operation- 26 -4 OperationThe operation method of the DS-U3 differs depending on the application used together.(1) For the NIS-Elements freewareNIS-Elements freeware is provided with various functions that can be accessed from icons on theMain Window. Icon functions are described below:Description of icons1. Operation modesThis mode enables you to click on the image and move it within the image window. Zooming can beperformed by a mouse wheel.This mode changes the cursor to an interactive zoom tool that magnifies a circular part of the currentimage when clicked.This mode enables you to insert annotation objects into pictures according to the Tools settings.2. Areas of interestThis tool defines the area of the live image that is used to determine auto exposure parametersapplied to the camera.This tool defines the area of the live image that is used to determine the auto focus parameters.Place the rectangle to where you would like to focus.3. Documents treatmentOpens an image file stored on hard disk.