Calculatorism

Close-up Lens Magnification

Compute added magnification = diopter × focal / 1000 from lens focal and close-up diopter.

Input Data

Input Lens focal.
mm
Input Diopter +D.

Results

0.1
Added mag = diopter × focal / 1000.

At a glance:Close-up Lens Magnification: enter parameters to compute results; complements related calculators.

Formula

Added magnification = diopter × focal / 1000.

How to Use

  1. Enter focal, diopter.
  2. It returns added magnification.

Case Studies

50mm, +2D → 0.1×

+4D gives ~0.2× close-up.

FAQ

Diopter?

+2, +4 are common close-up lenses; D = 1/focal(m).

Related Tools

References

Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Close-up Lens Magnification（/photography/closeup-magnification）。