The Vello LENS-2020 Lens Calibration Tool sets up quickly onto a tripod through its 1/4"-20 tripod mounting socket and can level out using the two-way bubble level at the base of the target. With this tool, you can test your camera's auto focus accuracy and then calibrate the focus system to correct for any front-or back-focusing issues. After the adjustment is saved within the camera as a lens profile, it can be used for future photo sessions. The included gray card helps you to set custom white balance for true colors, and the target folds flat for easy storage and portability. Test your camera's auto focus accuracy and then calibrate the focus system to correct front-or back-focusing issues The target mounts to a tripod through its 1/4" mounting socket, and you can level it out with the two-way bubble level located at the base The gray card helps you to set custom white balance on your camera for true colors The target folds flat for easy storage and portability Vello LENS-2020 Specs Dimensions: Upright: 6.6 x 5 x 5.6" / 168 x 128 x 143 mm Flat: 0.3 x 5.1 x 7.7" / 8 x 129 x 196 mm Weight: 3.1 oz / 87.9 g

Two-Way Bubble Level, Folds Flat for Portability or Storage. 1/4"-20 Tripod Attachment & Quick Setup. Includes a Gray Card for White Balancing. Fix Front- or Back-Focusing Issues. Test Camera's Auto Focus Accuracy, AF Fine Tune or AF Micro Adjustment.

Manufacturer: Vello. Date First Available: February 25, 2019. Best Sellers Rank: #5 in Camera Lens Rapid-Focusing Levers. Customer Reviews: 4.4 out of 5 stars 164 ratings 4.4 out of 5 stars. Item model number: LENS-2020. : B07P6FDW5R. Item Weight: 6.4 ounces. Package Dimensions: 9.2 x 6.3 x 0.7 inches.