Using the Curve Calibration Tool

1. Open the curve calibration grid

Open the curve calibration grid using Calibration > Load Asset > Curve Calibration Grid

2. Save and Print the grid

• Save the file using File > Export.
• Print the negative on transparency paper using your computer's photo viewer.
• Produce a print using the process of your choice. This example is using the cyanotype process.

3. Scan the result and open in Digital Negative Studio

• Scan or photograph the result using a scanner or digital camera (note: this must be at least 1600x1600px)
• Open the file using File > Open.

4. Crop the image

In order for calibration to be successful we need to crop the image at the dotted border

• Use the mouse to draw a selection around the dotted border
• Crop the image using Image > Crop to selection or Ctrl + F

5. Run the calibration process

• Run the calibration using Calibration > Generate Calibrated Curve
• Choose a name for the curve and click Save curve

6. Your curve is ready to use

• Your custom curve is now available to use in the curve tool
• Select Tools > Curves and select your custom curve from the dropdown menu