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Both calculators run independently — change the inputs on either side to compare results.

Depth of Field Calculator

Compute the total depth of field for any camera and lens combination using focal length, f-number, focus distance, and circle of confusion. Use it to plan sharp focus zones before a shoot.

Focal Length (mm)

F-Number

Focus Distance (mm)

Circle of Confusion (mm)

Fill in the required fields to see your result.

Optics

Critical Angle Calculator

Calculate the critical angle beyond which light undergoes total internal reflection at the boundary between a denser and a rarer medium. Essential for fiber optics, prism design, and understanding optical phenomena.

Denser Medium Refractive Index

Rarer Medium Refractive Index

Fill in the required fields to see your result.

Key differences

	Depth of Field Calculator	Critical Angle Calculator
Category	Optics	Optics
Inputs required	4	2
Result	Depth of Field (mm)	Critical Angle (°)
What it does	Compute the total depth of field for any camera and lens combination using focal length, f-number, focus distance, and circle of confusion. Use it to plan sharp focus zones before a shoot.	Calculate the critical angle beyond which light undergoes total internal reflection at the boundary between a denser and a rarer medium. Essential for fiber optics, prism design, and understanding optical phenomena.