Adorama has the Datacolor Spyder-Lens-Cal Autofocus Calibration Aid as their Deal of the Day for only $39 (Reg $69).
Key Features
Accurate and repeatable calibration of your lenses and recent DSLR bodies
Worthwhile investment to ensure your camera is focusing your lenses as precisely as possible
Datacolor Spyder-Lens-Cal Autofocus Calibration Aid $39 (Reg $69)
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