Focal Length Calculator

See how your lenses behave on different camera sensors. Updated for 2026.

Your Gear

STEP 1

Quick Lenses

Physical Focal Length

Max Aperture

Select Your Sensor

Nikon DX, Sony E, Fuji XSony a6700, Fuji X-T5, Nikon Zfc

Equivalent Result

STEP 2

Effective Focal Length

0mm

Full Frame Field of View

Equivalent DoF

f/0

Depth of Field Equivalence

Visual Scale

Pro Tip:

Your 50mm lens on a APS-C (1.5x) sensor captures the same frame as a 0mm on Full Frame. Your exposure (light per unit area) stays f/1.8, but your background blur behaves like f/0.

DISCLAIMER: This tool estimates equivalent focal lengths based on standard crop factors. Real-world sensor sizes vary slightly by manufacturer (e.g., Canon's 1.6x vs Nikon's 1.5x). Use this for planning and educational purposes.

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