Blind-spot geometry

CCTV Blind-Spot Checker

A wall- or pole-mounted camera can never see the ground right beneath it — there is always a dead zone between the base and where its view first hits the floor. Enter the mounting height, downward tilt and vertical field-of-view to find that blind-spot radius, the nearest visible point, and how far the view reaches. Planning figures; runs in your browser.

Mounting height (m)above the ground the camera looks atDownward tilt (°)0° = level, larger = aimed down

Vertical field-of-view (°)

Wider lens = larger φ; ~40° is typical for a general lens.

Blind spot at the base

0.0 m

ground within this radius of the base is not seen

0.0 m

Nearest visible point

>500 m

Far reach — to horizon

To shrink the blind spot

Mount a little lower, tilt further down, or use a wider lens (bigger φ). But tilting too far down pulls the far reach in — it is a trade-off between covering the base and seeing into the distance.

Planning estimate only — this is flat-ground geometry, and the real vertical field-of-view varies by lens and sensor. Slopes, steps and obstructions all shift the dead zone. Use it to compare positions, then confirm with a live view on site.

Close the gap in your layout

Mounting height & angle Plan camera placement Perimeter camera placement CCTV coverage planning

Related Guides — Deep-dive reading

CCTV Camera Height and Angle in India (2026): Mount It Where It Actually Sees

The mounting geometry that decides whether a camera reads a face or just films the sky: how high to fix it, how far to tilt it down, the dead zone under it, and keeping backlight and IR wash out of frame.

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CCTV Coverage Planning in India (2026): Think in Coverage, Not Cameras

Plan a home CCTV scheme by the coverage it produces, not the number of cameras you buy: map choke points, overlap so every camera is watched by another, keep entry-to-exit continuity, and set the pixels-per-metre each zone actually needs.

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Blind Spot Identification for Home Security in India

A defender's method to find and close the blind spots around an Indian home — the corners no camera, light or neighbour can see. Walk it by day and after dark, map each coverage gap, and fix it by re-aiming cameras, adding light, trimming planting and opening sightlines.

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Related Tools — You may also find these useful

CCTV Mounting Height & Angle Calculator

Height, target distance and lens angle to the downward tilt, the blind dead-zone below and where coverage begins and ends.

Height & Angle

CCTV Camera Overlap Calculator

The overlap or blind gap between two adjacent cameras, from coverage width and spacing, plus the spacing for a target overlap.

Overlap

CCTV Camera Coverage & Count Calculator

Estimate how many CCTV cameras you need, the NVR channels, storage in TB for your retention period, and an indicative all-in cost with GST.

CCTV Calculator