Vertical Fov Dimensions Calculator

Vertical FOV Formula:

\[ VFOV = 2 \times \arctan\left(\frac{height}{2 \times focal\_length}\right) \]

Vertical FOV (VFOV):

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1. What is Vertical FOV Calculation?

Vertical Field of View (VFOV) calculation determines the vertical angular extent of a scene that is visible through a camera lens or optical system. It's an important measurement in photography, videography, and optical engineering.

2. How Does the Calculator Work?

The calculator uses the VFOV formula:

\[ VFOV = 2 \times \arctan\left(\frac{height}{2 \times focal\_length}\right) \]

Where:

\( height \) — Sensor height or image height (mm)
\( focal\_length \) — Lens focal length (mm)

Explanation: The formula calculates the vertical angle of view based on the ratio of the sensor height to twice the focal length, using the arctangent function to convert this ratio to an angle.

3. Importance of VFOV Calculation

Details: Accurate VFOV calculation is crucial for determining the field of view in camera systems, lens selection, composition planning in photography, and designing optical systems for various applications.

4. Using the Calculator

Tips: Enter the sensor height and focal length in millimeters. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between VFOV and HFOV?
A: VFOV measures the vertical angle of view, while HFOV (Horizontal Field of View) measures the horizontal angle. They're calculated similarly but use different sensor dimensions.

Q2: How does sensor size affect VFOV?
A: Larger sensors with the same focal length will have a wider field of view. Smaller sensors will have a narrower field of view with the same focal length.

Q3: Why is the formula using arctan?
A: The arctan function converts the ratio of sensor dimension to focal length into an angular measurement, which represents the field of view.

Q4: Can this calculator be used for any lens type?
A: Yes, the formula works for all lens types as long as you have accurate measurements for sensor height and focal length.

Q5: How accurate is this calculation?
A: The calculation is mathematically precise for rectilinear lenses. For fisheye or other specialized lenses, additional correction factors may be needed.