Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Optics
Optical Power Calculator
Convert a lens's focal length in centimetres to optical power in diopters instantly. Use it to understand eyeglass prescriptions, compare lenses, or solve optics problems.
Fill in the required fields to see your result.
Optics
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.
Fill in the required fields to see your result.
Key differences
| Optical Power Calculator | Depth of Field Calculator | |
|---|---|---|
| Category | Optics | Optics |
| Inputs required | 1 | 4 |
| Result | Optical Power (D) | Depth of Field (mm) |
| What it does | Convert a lens's focal length in centimetres to optical power in diopters instantly. Use it to understand eyeglass prescriptions, compare lenses, or solve optics problems. | 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. |