Lens & Sensor Data
Field of View Analysis
An Angle of View (AoV) Calculator is an essential technical tool for photographers, cinematographers, and visual effects artists. It determines the exact angular extent of a scene that is captured by a camera lens paired with a specific sensor size. This helps professionals choose the perfect lens for landscape photography, tight portrait shots, or wide cinematic framing.
How the Angle of View is Calculated
The Angle of View depends entirely on two factors: the focal length of your lens and the physical dimensions of your camera sensor. By applying basic trigonometry, you can find the exact horizontal, vertical, and diagonal viewing angles in degrees.
AoV = 2 × arctan(Dimension / (2 × Focal Length))
For example, a classic 50mm lens mounted on a Full Frame camera (which has a sensor width of 36mm and a height of 24mm) produces a diagonal viewing angle of exactly 46.8 degrees. This closely mimics the natural field of view of the human eye, which is why 50mm lenses are often called standard or normal lenses.
How to Use This Photography Tool
- Enter the Focal Length of your lens in millimeters.
- Enter your camera's Sensor Width. If you use a Full Frame camera, leave it at 36mm. For an APS-C sensor, use 23.6mm (or 22.3mm for Canon). For Micro Four Thirds, use 17.3mm.
- Enter your camera's Sensor Height (typically 24mm for Full Frame, 15.6mm for APS-C, or 13mm for MFT).
- Review your results instantly to see your Diagonal, Horizontal, and Vertical viewing angles, as well as the overall lens classification.
Frequently Asked Questions
What is the difference between Field of View and Angle of View?
These terms are often used interchangeably, but they have a slight distinction. Angle of View is the absolute angular measurement (in degrees) captured by the sensor. Field of View (FoV) usually refers to the actual physical width and height of the scene captured at a specific physical distance away from the camera.
How does sensor size affect the Angle of View?
A smaller sensor captures a smaller portion of the image circle projected by the lens. This creates a cropped effect, significantly narrowing your Angle of View. This is why a 50mm lens behaves like a standard lens on a Full Frame camera, but acts like a zoomed-in telephoto portrait lens on a smaller APS-C camera.
Why is the Diagonal Angle most commonly referenced?
Lens manufacturers almost always advertise the diagonal angle of view because it represents the absolute maximum measurement from corner to corner of the image frame. However, cinematographers often pay closer attention to the horizontal angle when framing wide cinematic shots.