Equations used in camera selector

Questions & Answers
1

General Information

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Problem / Question

I’d like to know equations used in camera selector.
For example, when I compare X36-5CP-8/16/2000-400/1300 and X36-5CP-8/26/2000-400/1300 (Only aperture is different), I can see different Optics Blur and Operating Distance but the same Z-Accuracy.

Comparison:
https://www.ids-imaging.us/ensensocomparemodels.html?modelName1=X36-5CP-8%2F16%2F2000-400%2F1300&minD1=-645&numD1=264&minX1=9&maxX1=2056&minY1=0&maxY1=2047&modelName2=X36-5CP-8%2F26%2F2000-400%2F1300&minD2=-645&numD2=264&minX2=9&maxX2=2056&minY2=0&maxY2=2047

What are the equations used in camera selector for Optics Blur, Operating Distance, and Z-Accuracy? This is important when I select cameras.

2

Hi @rkoma,

  • The Z-Accuracy takes only the camera geometry into account, assuming a disparity accuracy of 1/4 with single-shot and 1/8 with FlexView.

  • The Blur also takes only the camera geometry into account, here focal length, apperture and pixel size.

  • The Operating Distance is derived from the range of disparities which have a Blur < 2.5px.

This is why you can see different Optics Blur and Operating Distance while having the same Z-Accuracy.

Let me know if you have further questions regarding or problems selecting a camera matching your setup.

Kind regards

Benny

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