Lens Focus Compensation Plugin

Measure Lens AF Error Values to Recalibrate Lenses AF in SPT Lens Professional

How Lens Focus Compensation Works

This plugin automates a series of camera AF operations to measure a lens's average deviation from perfect focus, generating a precise Lens Focus Error number.

You can then input this value into SPT Lens Professional Software to perform true lens AF adjustments.

• Automated Focus Analysis: Measures exact focus deviation across specific AF system configurations and zoom settings.
• Isolate Mechanical vs. Calibration Issues:
  • Small Errors: Normal tolerance; can generally be ignored.
  • Larger Errors {> 0.04): Indicates either an internal mechanical fault or a lens that requires full recalibration.
• Bench Requirement: Must be used with a verified Reference Body that shares the target camera's AF system.