The CH-AHD4HD-WDR is the same externally as the basic CH-AHD4HD model camera but this model has a high end Sony image sensor which includes WDR (Wide Dynamic Range) which provides improved images and recorded video where a combination of darker areas and strong lights are present in the camera’s field of view. This feature is strongly recommended for use where the system is to be used in dark situations with bright lighting, for instance underground mining or prolonged nighttime driving.
In keeping with the intended use for these cameras a 3.6mm lens is standard for general purpose viewing while still giving good viewing for more distant objects thanks to the high resolution sensor. Narrow angle versions are possible should there be a requirement.
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