Applicable to the following Flattener:
- Ultra Flat 132
- Ultra Flat 156
For other flatteners, please refer to Flattener Back Focus Adjustment
The Ultra Flat has been precisely pre-calibrated, so no back focus adjustment is required before use.
However, if star distortion appears in your images, you can install the included PVC gasket here:
▲ Camera Sensor Too Close
▲ Camera Sensor Too Far Away