Research overview: camera height, angle, and detection-zone geometry

How a camera is mounted, its height above ground, vertical and horizontal angle, and orientation relative to expected animal paths, strongly shapes which animals trigger it and how well they are photographed. This overview examines the science of detection-zone geometry: how the sensor's field of view and the camera's framing determine the effective detection distance and area used in density methods, how mounting height affects capture of small versus large cats, and how angling cameras to catch a flank improves individual identification from coat patterns. It covers trade-offs between maximizing trigger probability and obtaining identifiable, well-composed images. Standardizing placement geometry improves data comparability and is central to recognition-free density estimators that require a defined detection zone, as well as to photographers seeking frame-filling portraits.