How does sensor size affect the field of view?

A smaller sensor crops the image compared to a full-frame sensor, resulting in a narrower field of view and a higher crop factor for the same focal length.

Can I calculate the field of view for custom sensor sizes?

Yes, select the custom sensor preset and manually enter the sensor width and height in millimeters.

What is scene coverage?

Scene coverage is the physical width and height of the area captured by the camera at a specific distance from the lens.

Does this calculator support both metric and imperial units?

Yes, you can set the subject distance in either meters or feet to get the corresponding scene coverage dimensions.

How is the crop factor calculated?

It is calculated by comparing the diagonal measurement of a standard 35mm full-frame sensor (approx. 43.3mm) to the diagonal of your selected sensor.

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Field of View Calculator

Calculate camera field of view from focal length and sensor size, with scene coverage at distance.

Details

What this tool helps you do

An offline camera/lens framing calculator for photography, cinematography, and visualization work. It computes horizontal, vertical, and diagonal field of view from focal length plus sensor dimensions, then estimates how much scene width and height fit at a chosen distance. Use built-in presets for full-frame, APS-C, Micro Four Thirds, medium format, 1-inch, and phone-class sensors, or enter a custom sensor.

Execution

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Prepared example runs

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2 examples

35mm on full frame for street photography

A classic full-frame 35mm setup with a subject distance of 3 meters, showing a natural wide view and scene coverage.

<div class="fov-wrap">…about 54.4° horizontal FOV, 37.8° vertical FOV, 63.4° diagonal FOV, and roughly 3.1m × 2.0m scene coverage at 3m…</div>

85mm on APS-C for tight portraits

An APS-C portrait setup that behaves like a longer equivalent focal length and captures a much narrower frame at 4 meters.

<div class="fov-wrap">…about 15.7° horizontal FOV, a 1.45× crop factor, and around 1.1m scene width at 4m…</div>

Inputs

Set the required fields, then run the tool.

7 options

SettingsAdjust formats, ranges, numbers, and modes.6

焦距（mm）numberRequired传感器预设selectOptional自定义传感器宽度（mm）numberOptional自定义传感器高度（mm）numberOptional拍摄距离numberOptional距离单位selectOptional

TogglesEnable or disable optional behavior.1

显示公式checkboxOptionalEnabled when checked

Result

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Samples

Field of View Calculator

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Key facts

Overview

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How it works

Use cases

Examples

1. Street Photography Framing with a 35mm Lens

2. Portrait Framing on an APS-C Camera

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