LensAlign MkII is a Focus Calibration System that uses your camera’s menu-based AF fine-tune function to match each of your lenses precisely to the camera body. You no longer have to settle for out-of-the-box performance from your lenses. You can now make them as sharp as they can be. Features How to Use Distance Tool The LensAlign gives you an easy method to precisely calibrate your lens! Online Distance Calculator Front and Rear Sighting Plates 1/4-20 Tripod Mount 2 Sided 10-1/2 inch Focus Display Ruler 20 Degree Ruler Angle Easy Disassembly for Travel LensAlign comes in two versions, the smaller MKII and the larger ‘pro’ version, the MKII Plus DSLR autofocus systems may not be as precise as you think. Manufacturing tolerances often result in subtle mismatches between camera bodies and lenses, resulting in poor autofocus performance. This can cause your images to be softer than they should be. Every maker of hi-end DSLRs acknowledges this by providing auto-focus adjustment capabilities right in their camera’s menu systems. 1. Setup LensAlign and the camera to be tested Mount the camera/lens combination to be tested on a tripod. LensAlign can be table-top or tripod mounted via its 1/4-20 tripod socket. Set the test camera’s aperture to ƒ8. Looking through the test camera’s viewfinder, adjust the camera’s position so that the center “sighting port” of LensAlign is approximately aligned with the center autofocus point of the camera. 2. Sight the camera to LensAlign The goal of alignment is to adjust the camera’s position until the hole in the Rear Sighting Plate “Bullseye” is centered in the center sighting port , and both are centered in the frame. When this is achieved, the Focus Target of LensAlign and the camera imaging plane will be perfectly parallel, which is required for accurate focus evaluation. (Note that only the center Sighting Dot will appear centered when perfect alignment is achieved). 3. Capture test images Set the camera to Manual or Aperture Priority exposure mode and open the aperture of the lens to its lowest ƒ stop (aperture wide open). Focus (using center-point auto-focus) and capture test images. 4. Evaluate test images Review the test captures on screen and evaluate the results as displayed on the Focus Display Ruler. If the test camera has Auto Focus Adjustment capability, set it appropriately to correct any auto-focus errors that you may observe. If necessary, repeat steps 3 and 4 until proper focus adjustment is achieved. Use this online calculator to figure out the distance your camera must be from LensAlign based on which lens you are using.