The Gain slider adjusts the sensitivity of the camera’s sensor. Use it sparingly. By increasing the gain, you will brighten your image, but you will introduce more noise and decrease the quality of the measurement. Sometimes this is necessary when the image is too dark. This value is scaled from 0 to 30.0. Always set the Brightness slider first, then add the least gain necessary. You may also want to add supplemental lighting to reduce the need for excess gain. There are three ways to move the slider:
- You can place the cursor over the slider and left-click and hold it. While holding, move the cursor left or right to adjust as necessary.
- You can left-click on the slider then use the Left/Right arrow keys to step the values up or down.
- You can click inside the box and manually type numbers into the field. NOTE - the value will not change until you exit the field. You can either press the TAB key or click in another box.
In the attached video the three adjustment methods are displayed. You can also see the effect that moving the slider has on the image.
The Gain slider plays an important part in Shaft Inspection recordings. Here, you want to set the Gain slider as HIGH as possible and the Brightness slider as LOW as possible. This allows for the shortest exposure time and clearest picture of a rotating shaft.