Auto Exposure Area

Specify the photometric area for automatic exposure. This is a parameter that appears when [Auto] is selected in [Exposure mode].
The image displayed when the photometric area is set is used as the reference image for automatic exposure.

  1. Select [Fixed] from the [Exposure mode] drop-down box.
  2. Adjust the exposure time to obtain appropriate brightness for the image.
  3. Select [Auto] from the [Exposure mode] drop-down box.
    Click [OK] on the displayed pop-up that asks for the auto exposure area to be taught.
  4. Set the auto exposure area.
  5. If there is any area to be ignored in the photometric area, click the [Mask] button to mask the area to be ignored.
NOTE
  1. In [Auto Exposure Mode], a completely white or black area of the image cannot be specified. Set an area in intermediate gray shades as the photometric area.
  2. Areas that show large changes in brightness are not appropriate for [Auto Exposure Area]. E.g., in an area that might contain a workpiece, it is impossible to make stable measurements because the visible brightness changes largely depending on whether the workpiece is present or not. Choose a background area instead.