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The precision tool for photographers and cinematographers to calculate, compare, and visualize field of view across different camera systems.
The Lens Angle View Calculator provides accurate calculations for:
- Field of view angles for any lens and sensor combination
- 35mm equivalent focal lengths and crop factors
- Visual comparison between different camera systems
- Real-world dimensions of your frame at specific distances
Whether you're switching between camera systems, planning a shoot, or simply exploring the optical relationships between different formats, this calculator offers precise, science-based results beyond simplified "crop factor" approximations.
- Select your sensor format from our extensive database of 40+ sensor sizes
- Enter your focal length in millimeters
- View the results including angles of view, 35mm equivalence, and visual representation
- Compare multiple setups to understand the differences between systems
- High-Precision Angular Calculations: Get accurate diagonal, horizontal, and vertical field of view angles
- Visual Comparison: See exactly how different sensor/lens combinations compare with clear visual guides
- Reference Images: Upload your own images to visualize how different setups would frame the same scene
- Flexible Alignment Options: Choose from multiple alignment modes to match your compositional needs
- The "1-inch" Sensor Misconception - Discover why sensor naming conventions can be misleading
- 35mm Equivalent Focal Length - Understand the standardized reference system for comparing lenses
- Field of View Calculations - Learn about the mathematical formulas and optical principles
- Field of View Calculations Verification Test - a verification test comparing the theoretical calculations of FOV with actual photographs.
- Photographers switching between camera systems
- Cinematographers planning shots with multiple camera formats
- Technical Directors making equipment decisions
- Educators teaching optical principles
- Photography Enthusiasts curious about the science behind their lenses
This calculator uses precise trigonometric formulas rather than approximations, accounting for the actual angular geometry of optics. All calculations happen in real-time on your device with no data sent to remote servers.
Get Started with the online free Calculator →
© 2025 Weil Jimmer @ WBFT. All rights reserved.
This software is licensed under the BSD 3-Clause License:
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior