Magnification of a Lens Calculator

Your details

Choose the mode that matches your optical setup.
Distance from the object to the centre of the lens.
mm
The focal length of the lens.
mm
Optional extension tube length mounted between lens and camera body. Increases magnification.
mm
MagnificationMinified (image smaller than object)
-0.0526

Ratio of image size to object size (negative = inverted image).

Absolute magnification0.0526
Image distance52.63mm
Reproduction ratio1:19.00
Field of view (full-frame 24 mm sensor)456mm
0.0526 x
Minified<0.5Near life-size0.5-1Macro (1-2x)1-2High macro2-5Very high5+

Magnification: 0.0526x (1:19.00)

  • The image forms 52.63 mm behind the lens.
  • The negative sign means the image is real and inverted, typical for a converging lens with the object beyond the focal point.
  • A full-frame sensor (24 mm height) would capture roughly 456.0 mm of the scene vertically.
  • At 0.0526x the image is smaller than the object. This is normal for most photographic lenses.
  • Reproduction ratio: 1:19.00.

Next stepTo increase magnification: move the lens closer to the object, use a longer focal length, or add an extension tube.

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