Some lenses and micro AF adjustment on A99: Sony Alpha SLR/SLT A-mount Talk Forum: Digital Photography Review
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Stephen Burch (Steve Burch) Birding Website: Back focus/Front focus errors: Improved method for making micro AF adjustments
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1pc High Quality Camera Folding Card Lens Focus Calibration Alignment AF Micro Adjustment Ruler Chart Mayitr - AliExpress
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