Radiographic Exposure Planning
Exposure Chart Builder
Build an exposure chart from step wedge readings.
Recommended shooting workflow
1. Capture setup details
Enter the equipment, film, SFD, and target density that should appear on the final chart.
2. Take two separate shots
For each kV you want to chart, you need at least two separate exposures.
3. Use a step wedge in each shot
Each shot should include a step wedge so it spans a range of thicknesses. That gives you two useful measured points from each shot: one near the lower end of the thickness range that kV is suited to, and one near the higher end.
4. Aim to bracket the target density
Because each step wedge shot covers multiple thicknesses, you are more likely to get two different densities that fall above and below the target density. This gives you more flexibility if the first estimated shot time is not quite right and improves the chance of producing valid interpolation points.
5. Review the live chart
The chart updates automatically when enough valid readings are available. Use the grouped list to confirm that each kV and exposure combination has readings that bracket the target density.
Step 3
Live chart workspace
Review the interpolated exposure chart as soon as your readings support it.