Security Camera FOV Calculator

Camera Comparison

How to Use

1. Take a photo from the spot where you plan to mount a security camera. Use your phone's ultrawide (0.5x) lens for the widest view.
2. Upload the photo and select your phone model and lens/zoom used.
3. Calibrate distances by placing at least 2 horizontal markers on features at known distances (e.g., sidewalk edge at 15ft, far curb at 40ft). Closer and farther markers give better results.
4. Add cameras from the presets or enter custom specs. Each camera gets a colored overlay.
5. Read the visualization:
   • Green zone (≥40 PPF): Can identify individuals — faces recognizable
   • Yellow zone (20–40 PPF): Can recognize known people — general features visible
   • Orange zone (10–20 PPF): Can detect presence — motion and shapes visible
   • The mini-map shows a top-down view of each camera's full FOV
6. Use Compare Cameras to see a side-by-side stats table.

Note: Distance calibration assumes roughly flat ground and a level camera. PPF values for ultra-wide (180°) cameras are averaged across the frame — center regions will have higher PPF than edges.

About

Security Camera FOV Calculator

Visualize camera Field of View before you buy them

Ground Distance from Camera Base

Measure along the ground from directly below the camera to this point.

Depth Between Points

Enter the depth (distance toward/away from camera) between the two points. Both points should be at different distances from the camera — e.g., near and far edge of a sidewalk, not left and right edges.

Warning: These two points appear to be at the same distance from the camera (horizontal measurement). This feature is for points at different depths — e.g., near edge and far edge of a sidewalk. A horizontal measurement (like driveway width) won't help with distance calibration.

Tip: You also need at least one "Ground Distance" marker for full calibration.