Magnification Calculator

Calculate magnification ratios for macro photography.

Lens Settings

Focal Length (mm)

Minimum Focus Distance (mm)

Extension Tube (mm)

Sensor Format

Subject Size (mm)

1:2.0

Close-up Range

Base Magnification1:2.0 (0.500x)

With Extension1:2.0 (0.500x)

Working Distance200 mm

Extension for 1:1~100 mm

Frame Coverage72.0 x 48.0 mm

Subject Fill42% of frame

DOF at f/8~2.88 mm

0mm tube0.50x

12mm tube0.56x

20mm tube0.60x

25mm tube0.63x

36mm tube0.68x

48mm tube0.74x

68mm tube0.84x