OM SYSTEM M.Zuiko Digital ED 12-40mm f/2.8 PRO II Lens for Micro Four Thirds

Rain streaks down the cobblestones of an old European alley as a travel photographer frames the scene, and the OM SYSTEM M.Zuiko Digital ED 12-40mm f/2.8 PRO II keeps working flawlessly. This lens pairs a constant f/2.8 aperture with rugged weather sealing, making it a trusted tool for documentary, landscape, and everyday shooting in unpredictable conditions. Its compact metal body and precise optics deliver professional results without weighing down your kit.

Key specifications

• Micro Four Thirds mount
• Focal length: 12-40mm (35mm equivalent: 24-80mm)
• Maximum aperture: f/2.8 constant
• Minimum aperture: f/22
• Optical design: 14 elements in 9 groups
• Diaphragm blades: 7, rounded
• Minimum focus distance: 20 cm (7.9 inches)
• Maximum magnification: 0.24x (at 40mm)
• Filter size: 72mm
• Weather sealing: dust, splash, and freezeproof to -10°C
• Fluorine coating on front element
• Metal construction

Why choose it

The constant f/2.8 aperture ensures consistent exposure and depth of field control throughout the zoom range, while the advanced optical design minimizes aberrations and delivers stunning edge-to-edge sharpness. Its robust metal build and comprehensive weather sealing mean you can rely on it in challenging conditions. The fluorine coating repels water and fingerprints, making maintenance effortless. With no image stabilization built in, it leverages the powerful in-body stabilization of OM SYSTEM cameras for sharp handheld shots even in low light.

Ideal use cases

• Travel and street photography
• Landscape and nature photography
• Documentary and reportage

Good to know

This lens is part of the M.Zuiko PRO series, known for high resolution and durability. It is compatible with all Micro Four Thirds cameras from OM SYSTEM and Panasonic, and its 72mm filter thread allows easy use of polarizers or ND filters. The zoom ring and focus ring operate smoothly, and the lens is designed to balance well on both compact and larger MFT bodies.