CLOSE-UP PHOTOGRAPHY

Macro Field & Reproduction Calculator

Translate magnification into real-world subject coverage and estimate pixels per millimetre for digitisation or close-up work.

CORE FORMULAsubject field = sensor dimension ÷ magnificationInputs stay in this browser.

INPUTS

Set your shot

SensorMagnification×Horizontal image pixelspx

LIVE RESULT

Your working numbers

Subject field36 × 24 mm

Scale1:1Life size on sensor

Theoretical sampling167 px/mm

Across 10 mm1,667 px

Geometric estimate at the sensor plane. Resolved detail also depends on lens quality, diffraction, focus and stability.

READ THE RESULT

Use the estimate as a planning tool.

Camera specifications, tolerances and shooting conditions can change a real result. We expose the assumptions so you can choose a margin that fits the consequence of getting it wrong.

Read the related field guide