LV Handbook › Tools › Lens & FOV

Lens & Field of View

Pick a camera from the parts catalog. Field of view comes from its datasheet lens; DORI shows what it can do.

Camera

Hanwha Vision ANE-L7012L

Not listed? Type the model and we'll add it to the catalog.

Hanwha Vision ANE-L7012L
1/2.8" CMOS · 2560 × 1440
3 mm fixed · HFOV 97°
Datasheet

Lens range 3 mm fixed

12 m · 39.4 ft

Coverage Observe

Horizontal FOV
97°
97°
Vertical FOV
53°
Scene width
27.13 m
89.0 ft
Pixel density
94.4 px/m
28.8 PPF
Top-down field of view27.13 m wide12 m97°
IEC 62676-4 levelNeedsYou get
Identify 250 px/m · 76.2 PPF 94.4 px/m Short
Recognize 125 px/m · 38.1 PPF 94.4 px/m Short
Observe 62.5 px/m · 19.1 PPF 94.4 px/m Meets
Detect 25 px/m · 7.6 PPF 94.4 px/m Meets

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Lens and FOV come from the camera datasheet. DORI thresholds: IEC 62676-4:2014.

Field of view and pixel density

The lens sets the angle; distance turns that angle into a scene width. Divide the camera's horizontal pixels by that width to get pixels per meter or foot.

This tool starts from each camera's datasheet field of view at the wide and tele ends, so the numbers match what the manufacturer publishes.

IEC 62676-4 defines four DORI levels by pixel density on the target: Detect 25 px/m, Observe 62.5 px/m, Recognize 125 px/m and Identify 250 px/m.

FAQ

What are the DORI distances?IEC 62676-4 sets pixel densities on the target: Detect 25 px/m, Observe 62.5 px/m, Recognize 125 px/m and Identify 250 px/m (about 7.6, 19, 38 and 76 pixels per foot).
Why does the field of view match the datasheet?The tool uses each camera's published horizontal and vertical FOV at the wide and tele ends, so real lens distortion is included. Between the ends it interpolates the lens's effective image width.
What is pixels per foot?Horizontal resolution divided by scene width in feet. More pixels per foot means more detail on a face or plate.
What if the camera can't reach my target?Reverse mode tells you when the needed focal length is past the lens range and lists catalog cameras that can reach it.
My camera isn't listed. What now?Type the model and it is sent to the catalog team as a suggestion. Pick a catalog model with the same sensor and lens until it is added.

Cameras to try

Open a camera to see its manufacturer specs and run this tool with them filled in.

Brands: Axis (2 cameras) · Hanwha Vision (301 cameras)