发布时间 : 2025-12-17 01:41:56 UTC
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Online photography depth of field calculator


Formula for calculating depth of field:

Among them:
δ——Allowable Dispersion Circle Diameter
F——The Aperture Value of the Lens
f——Focal length
L——Focus distance
ΔL1——Front Depth of Field
ΔL2——Background depth
ΔL——Depth of field
Formula:
Front Depth of Field\(ΔL1=FδL^2/(f^2+FδL)\)
Background depth\(ΔL2=FδL^2/(f^2-FδL)\)
Depth of field\(ΔL=ΔL1+ΔL2=(2f^2FδL^2)/(f^4-F^2δ^2L^2)\)