Rent a LensAlign MkII Focus Calibration System at LensProToGo.com

The LensAlign MkII Focus Calibration System is a handy tool for fine-tuning microfocus on cameras that offer that capability. Key features include:

Useful tool for AF calibration.
Requires camera that supports microfocus adjustment.
1/4"-20 threaded base
10.5-inch dual sided focus display ruler

Focus Calibration. While microfocus can be set without a LensAlign, the process is made much more simple with its use. It allows for quick, easy correction of front- and back-focusing.

10.5-Inch Focus Display Ruler. Held in-place at a 20º angle, this ruler supports calibration of most lenses. As a rough estimate, the recommended testing distance is 8.2 feet for each 100mm of focal length. For more exact measurements, you can use the LensAlign Distance Tool found on their website.