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DFOV Formula:
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Diagonal Field Of View (DFOV) is a measurement used in photography and optics that represents the angular extent of the scene captured by a camera or optical system, measured diagonally across the frame.
The calculator uses the DFOV formula:
Where:
Explanation: The formula calculates the angular field of view based on the physical dimensions of the imaging sensor and the focal length of the lens.
Details: Calculating DFOV is essential for photographers, cinematographers, and optical engineers to understand how much of a scene will be captured, plan shots, select appropriate lenses, and compare different camera systems.
Tips: Enter the diagonal size of your camera sensor in millimeters and the focal length of your lens in millimeters. Both values must be greater than zero for accurate calculation.
Q1: Why is diagonal field of view important?
A: DFOV provides a standardized way to compare the field of view between different camera systems and lenses, helping photographers choose the right equipment for their needs.
Q2: How does sensor size affect DFOV?
A: Larger sensors with the same focal length will have a wider field of view, while smaller sensors will have a narrower field of view with the same focal length.
Q3: What's the difference between horizontal, vertical and diagonal FOV?
A: Horizontal FOV measures left-to-right coverage, vertical FOV measures top-to-bottom coverage, and diagonal FOV measures corner-to-corner coverage, which is typically the largest measurement.
Q4: Can I use this calculator for any camera system?
A: Yes, as long as you know the sensor diagonal size and lens focal length, this calculator works for any camera system including DSLR, mirrorless, cinema cameras, and even smartphone cameras.
Q5: How accurate is this calculation?
A: The calculation is mathematically precise based on the inputs provided. Accuracy depends on providing correct sensor diagonal measurements and accurate focal length values.