Fisheye, 360°, Panoramic and Dual-Lens Cameras Explained

One camera, a much wider view

Ordinary CCTV cameras see a slice of the scene, typically 80 to 110 degrees across. To cover a large room or a wide gate area, you need several. Fisheye, panoramic and dual-lens cameras take a different approach: one device sees a whole room, a full 180-degree frontage, or two directions at once. Used in the right places, they reduce camera count, cabling and blind spots.

The three types

Dewarping

A fisheye image looks like a circle with curved edges. The NVR, app or camera can “dewarp” it into normal-looking views: a panorama, four quadrants, or virtual pan-tilt-zoom windows you can move around after recording. Check that your NVR and phone app support dewarping for the camera model you choose, or you will be stuck with the circular image.

Resolution matters more

A fisheye spreads its pixels across the whole room, so each person gets far fewer pixels than in a normal camera. That is why fisheye cameras use 6MP to 12MP sensors. Even then, they are best for seeing movement and activity, not for identifying faces at the edges. Plan a normal camera at entrances and counters to capture faces, and use the fisheye for overall coverage.

Where they replace several cameras

• A 1,500 sq ft shop floor: one ceiling fisheye can replace three or four domes for general coverage.
• A building frontage or gate: one 180° panoramic camera covers the whole width without gaps.
• An office lobby: a fisheye sees reception, lifts and entrance at once.
• A parking area: a multi-sensor panoramic camera on a pole covers rows a single camera would miss.

Limits to plan around

• Poor face detail at the edges of the image.
• Ceiling height matters: too high and people are tiny; too low and the camera can be knocked.
• Multi-sensor panoramic cameras cost more than one ordinary camera, though often less than three.
• Not all NVRs dewarp all models — test before buying.
• Storage use is higher because of the higher resolution.

Combining with other cameras

A strong design for retail is a fisheye in the middle of the floor for activity, plus a face-level camera at the entrance and one over the billing counter. For yards and campuses, a panoramic camera for overview can be paired with a PTZ for zooming into detail.

A retail example

A pharmacy with a square 1,200 sq ft floor previously had four 2MP domes and still had blind spots between shelves. Replacing three of them with one 12MP fisheye in the centre of the ceiling covered every aisle, and the fourth camera was moved to face-level at the door. Cables went from four ceiling runs to two, and staff can now follow a customer around the whole floor in one view.

Getting the choice right

We check ceiling height, room shape and what you need to identify before recommending a fisheye or panoramic camera, and we confirm your NVR and app support it.

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