OM SYSTEM M.Zuiko Digital ED 12-40mm f/2.8 PRO II Lens (Micro Four Thirds, 62mm Filter)

Constant f/2.8 aperture across the entire 12-40mm zoom range delivers uncompromising optical performance for Micro Four Thirds cameras. This professional-grade standard zoom from OM SYSTEM combines exceptional sharpness with rugged, weather-sealed construction, making it a reliable tool for demanding photographers in any environment.

Overview

Covering a versatile 24-80mm equivalent focal length, the M.Zuiko Digital ED 12-40mm f/2.8 PRO II is engineered for a wide range of subjects, from sweeping landscapes to intimate portraits. The fast, constant aperture ensures excellent low-light capability and consistent exposure control throughout the zoom range. Its sophisticated optical design features 14 elements in 9 groups, including aspherical, ED, and HR elements, to minimize aberrations and deliver stunning edge-to-edge sharpness.

What stands out

• Constant f/2.8 maximum aperture for consistent brightness and depth of field control at every focal length.
• Dust, splash, and freezeproof construction (down to -10°C) for reliable performance in challenging conditions.
• Manual focus clutch mechanism for instant switching between autofocus and manual focus.
• ZERO (Zuiko Extra-low Reflection Optical) coating reduces flare and ghosting for clear, contrast-rich images.
• Fluorine coating on the front element repels water and fingerprints, making it easy to clean.

Technical details

• Focal Length: 12-40mm (35mm equivalent: 24-80mm)
• Maximum Aperture: f/2.8
• Minimum Aperture: f/22
• Lens Mount: Micro Four Thirds
• Angle of View: 84° to 30°
• Minimum Focus Distance: 0.2m (at 12mm), 0.25m (at 40mm)
• Maximum Magnification: 0.21x (0.42x 35mm equivalent)
• Optical Design: 14 Elements in 9 Groups
• Diaphragm Blades: 7, Rounded
• Filter Size: 62 mm (Front)
• Weather Sealing: Dust, Splash, and Freezeproof (-10°C)
• Focus Type: Autofocus with Manual Focus Clutch

Our verdict

The M.Zuiko Digital ED 12-40mm f/2.8 PRO II is a benchmark standard zoom for Micro Four Thirds, offering a rare combination of constant fast aperture, outstanding optics, and rugged build quality. It is the ideal everyday lens for professionals and enthusiasts who demand reliability and image quality without compromise.