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Lens Calibration Tool - $10 (Crooks)
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Includes User manual
* 9.2 x 6.3 x 0.7 inches
* Test Camera's Auto Focus Accuracy, AF Fine Tune or AF Micro Adjustment
* Fix Front- or Back-Focusing Issues
* Includes a Gray Card for White Balancing
* 1/4"-20 Tripod Attachment & Quick Setup
* Two-Way Bubble Level, Folds Flat for Portability or Storage
Now $10