8mm Standard

33.4° horizontal field of view - Complete coverage reference guide

Focal Length

8mm

Field of View

33.4°

Lens Type

Standard

Sensor

1/3"

About the 8mm lens

An 8mm lens delivers about 38° horizontal field of view — the focal length where CCTV transitions from "general surveillance" to "targeted observation." It is the workhorse for medium-distance identification: people approaching from 15–25 meters away remain recognizable, and license plates can be read in good light at typical lane distances.

Best for

•Mid-distance perimeter monitoring (15–30 m to the subject)
•Wide driveways and approach roads where vehicles enter at 20–40 km/h
•Long warehouse aisles and back-of-house corridors
•School and campus walkways viewed from a fixed mounting point

Trade-offs

•Coverage at 5 meters is only about 3.5 m wide — not suitable for indoor room overview
•Pairs poorly with wide spaces unless used in combination with another wide-angle camera
•Cabling cost increases if you need multiple cameras to cover an area a single 4mm could handle

Real-world example

At a school back gate viewed from 25 meters, an 8mm lens identifies pedestrians clearly while framing the gate itself for context. At a parking lot exit, the same lens at 20 meters reads license plates reliably under daylight conditions and with proper IR at night.

Compared to other focal lengths

8mm vs 6mm: about 30% narrower, with proportionally more identification distance. 8mm vs 12mm: noticeably wider, more forgiving of minor mounting angle errors, but loses about 30% of effective face-identification distance.

Coverage Width at Different Distances

Distance	Coverage Width	Use Case
5m	3.0m	Entrance/POS area
10m	6.0m	Retail floor, office
15m	9.0m	Warehouse aisle, parking
20m	12.0m	Warehouse aisle, parking
30m	18.0m	Parking lot, perimeter
50m	30.0m	Parking lot, perimeter
75m	45.0m	Long-distance monitoring
100m	60.0m	Long-distance monitoring