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120° FOV: wide coverage and a smaller central image

120° horizontal FOV covers 60° on either side of the forward direction. At 16:9, it gives about 89° vertical coverage and a center target about 58% as tall as at 90°.

A 120° horizontal camera is a wide example that makes the coverage and size tradeoff easy to see. It adds 30° overall compared with a 90° reference. The central target gets noticeably smaller, and objects toward the edges can look stretched. The purpose of the preview is to make those effects visible before you choose a setting, not to label the largest supported number as the best one.

By TechCompare · Updated

View A horizontal
90°
16:9 viewport
View B horizontal
120°
16:9 viewport
Central target height
58%
View B relative to View A at the same image dimensions

Field of view preview

90° versus 120° horizontal FOV at 16:9. Side boxes help show the additional directions entering the frame.

View A · 16:9
15 m / 50 ft20 m / 66 ft20 m / 65 ft36 m / 119 ft43 m / 140 ft
Horizontal
90°
Vertical
59°
View B · 16:9
15 m / 50 ft20 m / 66 ft20 m / 65 ft36 m / 119 ft43 m / 140 ft
Horizontal
120°
Vertical
89°

Drag either scene to look around. Camera movement is synced. Arrow keys work when focused, and Home resets the view.

Read height and coverage separately

At the same image dimensions, the center target has about 58% of its 90° image height in the 120° view. That is roughly 42% smaller in height. Meanwhile, the visible width at a fixed forward plane grows by about 73%. Those numbers describe different measurements and should not be swapped. More angular coverage does not mean that the same target receives more pixels in the frame.

Inspect the edges without changing the scene

The range includes boxes well to either side of the camera so a wide view has nearby geometry to reveal. Rotate either scene and look at how those boxes approach the borders. A rectilinear projection preserves straight lines, but a very wide flat image can make off-center objects appear stretched. Compare with the narrower view at the same rotation to separate perspective effects from an object changing shape.

Camera references: horizontal and vertical conversion and view size at a distance. The worked examples use the visualizer’s own camera math.

How this is calculated

The width of the view at 20 m (66 ft) forward is about 69 m (227 ft) for a 120° horizontal camera. At 90°, it is 40 m (131 ft). The central target height ratio is 1 ÷ tan(60°), approximately 58%. Vertical FOV is calculated from the selected aspect ratio and rounds to 89° at 16:9. These are model results with no game-specific zoom, crop, or weapon camera applied.

Verdict

Use the 120° preview to examine a wide candidate and the cost in central image size. If the change from your current setting feels too large, compare nearer values instead of jumping straight to this example. A game’s supported range, camera rules, and the way you use your screen decide whether that candidate is worth keeping.

More FOV scenarios

Horizontal FOV explained
Understand the angle from the left edge of the camera view to the right.
View details ➜
Convert vertical FOV
Translate a vertical camera angle before using horizontal controls.
View details ➜
Low and high FOV
Compare larger central targets with a wider view of the surroundings.
View details ➜

Frequently asked questions

Does 120° show twice as much as 60°?
It doubles the horizontal angle, but the width visible at a fixed forward distance follows a tangent relationship rather than a linear ratio. It also does not double the pixel count. Angular coverage, visible width at a plane, projected target size, and image resolution are different quantities.
Why do the side boxes look stretched at wide FOV?
This is a flat rectilinear perspective image. Directions near its edges spread out more than directions near its center. A wide view therefore changes the shape of an object’s projection across the frame. The boxes keep their world dimensions. This is not a fisheye lens simulation or a change to their geometry.