Recent content by Max Henkart

  1. Max Henkart

    Dahua Lens Replacement

    The cleanest solution is probably to get the 2.8mm IPC-HDW2431TM-AS-S2 as the FoV is pretty close. Old camera IPC-T120-D: 2.8 mm, horizontal field of view: 105.8°. Unknown Vertical and Diagonal New Camera IPC-HDW2431TM-AS-S2 2.8 mm variant is: Horizonal 102.0° × Vertical 55.0° × Diagonal...
  2. Max Henkart

    Accuracy of camera FOV and other specs

    Hi pa4friends, john-ipvm, The root cause of this AoV / FoV discrepancy is lens distortion. The FoV of a camera is a result of four items: focal length, distortion, pixel pitch, and pixel count. Most people forget about the distortion input, resulting in a large FoV / AoV calculation error for...
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