Lens Equivalency Calculator

(Compare field-of-view, crop, and depth-of-field across any two sensors, with optional focal reducers/extenders, anamorphic stretch, and portrait orientation)

Pick Video or Photo mode, choose two sensor formats to compare, then adjust focal length, focal multiplier (speed-booster / extender), anamorphic factor, and aperture. The calculator auto-fills the other side to match angle-of-view when possible and updates instantly as you change values.

Video

Photo

Sensor Drop-Down A

Crop: — Image circle: —

Sensor Drop-Down B

Crop: — Image circle: —

Focal-Multiplier Drop-Down A

new crop factor A = sensor crop × focal multiplier

new crop A: —

Focal-Multiplier Drop-Down B

new crop factor B = sensor crop × focal multiplier

new crop B: —

Focal-Length Slider A (mm)

fA: 50 mm Portrait: (portrait mode for Blazar Beetle 1.33x)

hFOV: — vFOV: — Closest sensor format: —

Focal-Length Slider B (mm)

fB: 50 mm Portrait: (portrait mode for Blazar Beetle 1.33x)

hFOV: — vFOV: — Closest sensor format: —

Aperture Drop-Down A

Selected fA: f/2.8 Subject distance: m

DOF A: — (Near / Far / Total)

Aperture Drop-Down B

Selected fB: f/2.8 Subject distance: m

DOF B: — (Near / Far / Total)

Side-A Results

new crop factor

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effective focal length

—

FOV (H × V)

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Equiv. f-number (equal DOF)

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DOF ratio (B/A) fixed f-num

—

DOF ratio (B/A) equal aperture dia.

—

DOF ratio (B/A) same lens

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Side-B Results

new crop factor

—

effective focal length

—

FOV (H × V)

—

Equiv. f-number (equal DOF)

—

DOF ratio (A/B) fixed f-num

—

DOF ratio (A/B) equal aperture dia.

—

DOF ratio (A/B) same lens

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