Canon EF 180mm f/3.5L Macro USM lens

Another telephoto macro lens with a maximum magnification of 1x. Life-size close-ups can be taken from a farther distance without disturbing the subject (insects, etc.). The internal floating system minimizes fluctuations in aberrations caused by changes in the focusing distance. Optical performance is outstanding from 1x to infinity.

Specifications
Main Unit Spec

Focal Length & Maximum Aperture 180mm 1:3.5
Lens Construction 14 elements in 12 groups
Diagonal Angle of View 13° 30
Focus Adjustment Inner focusing system with USM
Closest Focusing Distance 0.48m / 1.6 ft.
Filter Size 72mm
Max. Diameter x Length, Weight 3.2 x 7.3, 2.4 lbs. / 82.5 x 186.6mm, 1090g