Creating an Exposure Calibration

Follow the steps on this page when creating an exposure preset for Marso.

To create an exposure preset, you will need to capture a photo of a calibration grey card under similar conditions to how you will capture any subjects. See Capturing a Calibration Image.

Any existing presets will be shown on the left. Click ‘New’ to create a new preset

Enter the information collected when capturing the image. Click Create to launch the Exposure Calibration tool.

Click and drag to create a selection box on the image. Select the region corresponding to the grey value given.

Press Enter to Confirm the selection.

If you are unable to see the grey card to make a selection, use the hotkeys to adjust the brightness.

W/S - Key to make the preview image brighter or darker. R - To reset the brightness

This is just for preview purposes and does not affect the final calibration.

The calibration tool will then run in the background. This may take up to 10 minutes depending on your system and the resolution of your input images. When it is complete the adjusted image will be shown for confirmation.

After accepting the adjusted image you will be returned to Marso, with the new exposure preset visible in the list.