Questions tagged “focus testing”
Ask the Unique Photo creator community — gear, technique, post-processing and more.
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What focus-chart results suggest a lens element is de-centered or out of spacing?
focus-testinglens-aberrationsvintage-lenseslens-repairpentax
Photography Stack Exchange contributor
12y ago
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2
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182
Why is autofocus micro-adjustment usually tested at about 5–50× focal length?
focus-testingmicroadjustmentautofocustechniquelens-calibration
Photography Stack Exchange contributor
13y ago
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121
FoCal vs LensAlign Pro for autofocus microadjustment on a Canon 7D
focus-testingmicroadjustmentautofocuscanon-7dlens-calibration
Photography Stack Exchange contributor
14y ago