裁剪结果Calc
裁剪因数计算器
CropFactorCalc
Crop Factor Calculator
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Calculate effective focal length on different sensor sizes using crop factor conversion for equivalent perspectives.
Características Principales
Crop factor calculation for all major sensor sizes
Equivalent focal length determination across formats
Full-frame to APS-C conversion tables
Micro Four Thirds and other format support
Field of view adjustments for sensor sizes
Interactive focal length converter
How to Use Crop Factor Calculator
Select Your Camera
Choose your camera's sensor size (full-frame, APS-C, Micro Four Thirds, etc.)
Enter Focal Length
Input your lens focal length in millimeters
See Conversion
The calculator displays equivalent focal length on other sensor sizes
Compare Perspectives
Understand how your lens behaves on different camera bodies
Plan Purchases
Determine what focal lengths you need for desired field of view
Convert Between Systems
Easily translate focal lengths when switching camera systems
Casos de Uso
Photographers upgrading from APS-C to full-frame or vice versa
Adapting lenses across different camera systems
Understanding lens behavior on different camera bodies
Planning lens purchases for specific coverage needs
Preguntas Frecuentes
What is crop factor?
The ratio of full-frame sensor diagonal to your camera's sensor diagonal, multiplying your lens focal length.
What is the crop factor for APS-C?
Approximately 1.5x for Nikon and Sony, 1.6x for Canon, meaning a 50mm lens behaves like 75-80mm.
Do I need to know crop factor?
Yes, it helps understand field of view, depth of field, and equivalent perspectives across different cameras.
Does crop factor affect depth of field?
No, depth of field depends on actual focal length and aperture, not crop factor. It only affects field of view.
How does crop factor apply to phone cameras?
Phone sensors are very small, resulting in extremely high crop factors, causing all lenses to act like telephoto lenses.