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

For photographers who demand uncompromising optical performance in a compact, rugged package, the OM SYSTEM M.Zuiko Digital ED 12-40mm f/2.8 PRO II delivers professional-grade image quality across a versatile standard zoom range. This lens is the workhorse of the Micro Four Thirds system, offering a constant f/2.8 aperture for consistent exposure and beautiful bokeh, while its weather-sealed construction ensures reliability in harsh conditions.

Who is it for

This lens is ideal for professional and enthusiast photographers using OM SYSTEM or Panasonic Micro Four Thirds cameras. It suits wedding, event, landscape, travel, and everyday photography, providing a 24-80mm equivalent focal length that covers wide-angle to short telephoto perspectives. Its fast aperture and robust build make it a go-to choice for those who need a single, dependable lens for diverse shooting scenarios.

Main features

• Constant f/2.8 maximum aperture for excellent low-light performance and depth-of-field control
• Advanced optical design with 14 elements in 9 groups, including aspherical, ED, and HR elements to minimize aberrations
• ZERO (Zuiko Extra-low Reflection Optical) coating reduces flare and ghosting for high contrast and clarity
• Dustproof, splashproof, and freezeproof construction (IP53 rated) for shooting in challenging environments
• Manual focus clutch mechanism for instant switching between autofocus and manual focus
• Minimum focusing distance of 20 cm (at 12mm) and maximum magnification of 0.21x (0.42x 35mm equivalent) for close-up versatility
• Rounded 7-blade diaphragm for smooth, circular bokeh
• Includes lens hood LH-66D, lens cap LC-62F, and rear lens cap LR-2

Specifications

• Lens type: Standard zoom
• Focal length: 12-40mm (35mm equivalent: 24-80mm)
• Maximum aperture: f/2.8
• Minimum aperture: f/22
• Lens mount: Micro Four Thirds
• Format compatibility: Micro Four Thirds
• Angle of view: 84° to 30°
• Minimum focus distance: 20 cm at 12mm, 25 cm at 40mm
• Maximum magnification: 0.21x (0.42x 35mm equivalent)
• Optical design: 14 elements in 9 groups
• Diaphragm blades: 7, rounded
• Autofocus: Yes
• Image stabilization: No (relies on camera body IS)
• Filter size: 62 mm (front)
• Weather sealing: Dust, splash, and freezeproof (IP53 rated)
• Focus type: Autofocus with manual focus clutch mechanism
• Coating: ZERO (Zuiko Extra-low Reflection Optical) Coating
• Special elements: 1 Aspherical ED, 2 Aspherical, 1 DSA, 2 ED, 1 HD, 2 HR
• Included accessories: Lens Hood (LH-66D), Lens Cap (LC-62F), Rear Lens Cap (LR-2)

Tips

To maximize sharpness, stop down to f/4-f/5.6 for critical work, but the f/2.8 aperture is excellent for subject isolation and low light. Use the manual focus clutch for precise control in macro or video applications. When shooting in adverse weather, ensure the lens is properly mounted and the rear cap is secure to maintain sealing. Clean the front element with a soft, dry cloth to preserve the ZERO coating.