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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. PeterPS

    Binocular Evolution I: Field of View

    As I was trying to explain in a post above (#38), pincushion distortion was introduced (by Zeiss, I believe) to prevent the rolling ball effect, and mustache distortion (pincushion followed by barrel distortion) to avoid the rolling bowl effect caused by significant pincushion over a wide FoV. I...
  2. PeterPS

    Binocular Evolution I: Field of View

    Field flattening and rectilinear distortion indeed are two different things. Concerning the latter, there are several design options: 1) insignificant rectilinear distortion, the downside being that the view may be affected by "rolling ball" effect (for example Swaro EL); 2) significant...
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