Optical Engineering & Camera Engineering Technical Blog
Lens selection guides, imaging fundamentals, and machine vision engineering references written by the Commonlands optical engineering team in San Diego.
Showing articles tagged Focus & Alignment (5 articles) · Clear filter
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Focus & AlignmentFixed vs Varifocal vs Zoom Machine Vision Lenses
Fixed focal length vs varifocal vs zoom machine vision lenses: focus behavior, calibration stability, and how to choose for repeatable me...
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Focus & AlignmentAutofocus in Machine Vision
How machine vision autofocus works: fixed focus vs autofocus, voice-coil and piezo M12 mounts, manual focus mechanics, and contrast vs ph...
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Focus & AlignmentActive Alignment for Camera Modules
Active alignment positions a lens to the image sensor in six degrees of freedom while measuring MTF live, then locks it with UV-cure adhe...
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Focus & AlignmentChief Ray Angle (CRA) and Sensor Mismatch
The chief ray angle (CRA) of a lens and the chief ray of a sensor affect image quality factors such as color shading and vignetting.
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Focus & AlignmentHow to Focus a Camera (M12 and C-Mount Lenses)
If you've recently purchased one our M12 lenses or C-Mount lenses, the first step is to assemble your camera. We also offer camera module...
