Measuring Image Quality
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3-Bar Contrast |
Overview
OpticStudio™ software includes a reticle
with the USAF-1951 layout. The 3-bar targets on
this layout are often used to evaluate how well
a lens can resolve fine detail. Since "fine"
is an ambiguous word, we specify the target size
in lines+spaces per mm. Since "resolve"
is also ambiguous, we specify resolution in percent
contrast. |
Making
the actual measurement
- Drag a selection rectangle
around the target
- Contrast is automatically
computed and displayed
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| Further information
The PixelScope™
Help file may be downloaded or viewed online.
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