Lensalign Pro Focus Calibration System is the heart of the LensAlign system. Its patent pending design provides the fastest and most reliable method of measuring the focus performance of your camera/lens combinations.Lensalign Pro Focus Calibration System <a href=”http://www.3stepads.com/547101/lensalign-pro-focus-calibration-system-discount-special-prices-cheap-prices-2/” target=”_blank”>Lensalign Pro Focus Calibration System</a>