Camera Focal Equivalence Converters
Calculate focal-length equivalence, aperture equivalence, and horizontal field of view with sensor-specific crop and geometry assumptions.
Available converter families
Quick start lens-equivalence checks
Start with full-frame, APS-C, Micro Four Thirds, and smartphone profiles for fast framing comparisons.
Focal length mm to full-frame equivalent mm at Full-frame 36mm width (horizontal) Focal length mm to full-frame equivalent mm at APS-C Sony/Fuji 23.5mm Focal length mm to full-frame equivalent mm at Micro Four Thirds 17.3mm Focal length mm to full-frame equivalent mm at Smartphone 1/1.3" class Focal length mm to horizontal angle of view (degrees) at Full-frame 36mm width (horizontal) Focal length mm to horizontal angle of view (degrees) at APS-C Sony/Fuji 23.5mm Focal length mm to horizontal angle of view (degrees) at Micro Four Thirds 17.3mm Focal length mm to horizontal angle of view (degrees) at Smartphone 1/1.3" class
Lens focal length to 35mm-equivalent focal length
Use these pages when you know actual lens focal length on a given sensor and need full-frame equivalent framing.
focal mm to equivalent mm at Full-frame 36mm width (horizontal) focal mm to equivalent mm at APS-C Sony/Fuji 23.5mm focal mm to equivalent mm at APS-C Canon 22.3mm focal mm to equivalent mm at APS-H 27.9mm focal mm to equivalent mm at Micro Four Thirds 17.3mm focal mm to equivalent mm at 1-inch sensor 13.2mm focal mm to equivalent mm at Super 35 24.9mm focal mm to equivalent mm at Super 16 12.5mm focal mm to equivalent mm at Cinema full-frame 36mm focal mm to equivalent mm at Medium format 44x33 focal mm to equivalent mm at Medium format 53.4x40 focal mm to equivalent mm at Smartphone 1/1.3" class focal mm to equivalent mm at Smartphone 1/1.7" class focal mm to equivalent mm at Smartphone 1/2" class focal mm to equivalent mm at Smartphone 1/2.55" class focal mm to equivalent mm at Action camera 1/2.3" class focal mm to equivalent mm at Drone 1-inch class focal mm to equivalent mm at Compact 1/2.5" class
35mm-equivalent focal length to lens focal length
Use these pages to derive the required physical focal length on each crop model from target full-frame equivalent framing.
equivalent mm to focal mm at Full-frame 36mm width (horizontal) equivalent mm to focal mm at APS-C Sony/Fuji 23.5mm equivalent mm to focal mm at APS-C Canon 22.3mm equivalent mm to focal mm at APS-H 27.9mm equivalent mm to focal mm at Micro Four Thirds 17.3mm equivalent mm to focal mm at 1-inch sensor 13.2mm equivalent mm to focal mm at Super 35 24.9mm equivalent mm to focal mm at Super 16 12.5mm equivalent mm to focal mm at Cinema full-frame 36mm equivalent mm to focal mm at Medium format 44x33 equivalent mm to focal mm at Medium format 53.4x40 equivalent mm to focal mm at Smartphone 1/1.3" class equivalent mm to focal mm at Smartphone 1/1.7" class equivalent mm to focal mm at Smartphone 1/2" class equivalent mm to focal mm at Smartphone 1/2.55" class equivalent mm to focal mm at Action camera 1/2.3" class equivalent mm to focal mm at Drone 1-inch class equivalent mm to focal mm at Compact 1/2.5" class
Aperture to full-frame equivalent aperture (DoF basis)
Use these pages for depth-of-field equivalence discussions when comparing sensor formats by crop factor.
f-number to equivalent f-number at Full-frame 36mm width (horizontal) f-number to equivalent f-number at APS-C Sony/Fuji 23.5mm f-number to equivalent f-number at APS-C Canon 22.3mm f-number to equivalent f-number at APS-H 27.9mm f-number to equivalent f-number at Micro Four Thirds 17.3mm f-number to equivalent f-number at 1-inch sensor 13.2mm f-number to equivalent f-number at Super 35 24.9mm f-number to equivalent f-number at Super 16 12.5mm f-number to equivalent f-number at Cinema full-frame 36mm f-number to equivalent f-number at Medium format 44x33 f-number to equivalent f-number at Medium format 53.4x40 f-number to equivalent f-number at Smartphone 1/1.3" class f-number to equivalent f-number at Smartphone 1/1.7" class f-number to equivalent f-number at Smartphone 1/2" class f-number to equivalent f-number at Smartphone 1/2.55" class f-number to equivalent f-number at Action camera 1/2.3" class f-number to equivalent f-number at Drone 1-inch class f-number to equivalent f-number at Compact 1/2.5" class
Full-frame equivalent aperture to actual aperture
Use these pages to map equivalent depth-of-field aperture values back to the lens aperture on each crop model.
equivalent f-number to f-number at Full-frame 36mm width (horizontal) equivalent f-number to f-number at APS-C Sony/Fuji 23.5mm equivalent f-number to f-number at APS-C Canon 22.3mm equivalent f-number to f-number at APS-H 27.9mm equivalent f-number to f-number at Micro Four Thirds 17.3mm equivalent f-number to f-number at 1-inch sensor 13.2mm equivalent f-number to f-number at Super 35 24.9mm equivalent f-number to f-number at Super 16 12.5mm equivalent f-number to f-number at Cinema full-frame 36mm equivalent f-number to f-number at Medium format 44x33 equivalent f-number to f-number at Medium format 53.4x40 equivalent f-number to f-number at Smartphone 1/1.3" class equivalent f-number to f-number at Smartphone 1/1.7" class equivalent f-number to f-number at Smartphone 1/2" class equivalent f-number to f-number at Smartphone 1/2.55" class equivalent f-number to f-number at Action camera 1/2.3" class equivalent f-number to f-number at Drone 1-inch class equivalent f-number to f-number at Compact 1/2.5" class
Focal length to horizontal field of view
Use these pages to estimate horizontal angle of view from focal length using sensor width geometry.
focal mm to horizontal FOV at Full-frame 36mm width (horizontal) focal mm to horizontal FOV at APS-C Sony/Fuji 23.5mm focal mm to horizontal FOV at APS-C Canon 22.3mm focal mm to horizontal FOV at APS-H 27.9mm focal mm to horizontal FOV at Micro Four Thirds 17.3mm focal mm to horizontal FOV at 1-inch sensor 13.2mm focal mm to horizontal FOV at Super 35 24.9mm focal mm to horizontal FOV at Super 16 12.5mm focal mm to horizontal FOV at Cinema full-frame 36mm focal mm to horizontal FOV at Medium format 44x33 focal mm to horizontal FOV at Medium format 53.4x40 focal mm to horizontal FOV at Smartphone 1/1.3" class focal mm to horizontal FOV at Smartphone 1/1.7" class focal mm to horizontal FOV at Smartphone 1/2" class focal mm to horizontal FOV at Smartphone 1/2.55" class focal mm to horizontal FOV at Action camera 1/2.3" class focal mm to horizontal FOV at Drone 1-inch class focal mm to horizontal FOV at Compact 1/2.5" class
Horizontal field of view to focal length
Use these pages to estimate focal length required to achieve a target horizontal angle of view.
horizontal FOV to focal mm at Full-frame 36mm width (horizontal) horizontal FOV to focal mm at APS-C Sony/Fuji 23.5mm horizontal FOV to focal mm at APS-C Canon 22.3mm horizontal FOV to focal mm at APS-H 27.9mm horizontal FOV to focal mm at Micro Four Thirds 17.3mm horizontal FOV to focal mm at 1-inch sensor 13.2mm horizontal FOV to focal mm at Super 35 24.9mm horizontal FOV to focal mm at Super 16 12.5mm horizontal FOV to focal mm at Cinema full-frame 36mm horizontal FOV to focal mm at Medium format 44x33 horizontal FOV to focal mm at Medium format 53.4x40 horizontal FOV to focal mm at Smartphone 1/1.3" class horizontal FOV to focal mm at Smartphone 1/1.7" class horizontal FOV to focal mm at Smartphone 1/2" class horizontal FOV to focal mm at Smartphone 1/2.55" class horizontal FOV to focal mm at Action camera 1/2.3" class horizontal FOV to focal mm at Drone 1-inch class horizontal FOV to focal mm at Compact 1/2.5" class
Explanation
Camera equivalence depends on sensor size. This hub fixes each crop model in the URL, then applies crop-factor scaling for focal/aperture equivalence and trigonometric geometry for horizontal field-of-view calculations.
The Camera Focal Equivalence hub maps related converter families into directional routes with consistent assumptions.
Read more
Open a family hub to reach leaf pages with direct answers, calculator output, and reverse links built on the same constants.
Frequently Asked Questions
Is equivalent focal length the same as zoom or magnification?
Equivalent focal length is a framing comparison relative to full frame. It does not change the physical focal length of the lens.
What does equivalent aperture mean here?
Equivalent aperture is depth-of-field equivalence based on crop factor, not light transmission equivalence.
Why separate pages by crop model?
Because crop factor and sensor width differ by format. Fixed-model pages make assumptions explicit and query intent clearer.
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