Olympus 25mm f/1.2 M.Zuiko Digital PRO Autofocus Lens for MFT (Micro Four Thirds) Black {62}

Olympus 25mm f/1.2 PRO: the fast fifty equivalent built for Micro Four Thirds.

On a Micro Four Thirds body, 25mm gives you a 50mm equivalent field of view, that 47-degree angle of view sits squarely in classic normal-lens territory. At f/1.2, you get genuine subject separation at a maximum aperture that few native MFT primes match, and the 19-element, 14-group optical formula is engineered to keep that wide-open rendering clean. Olympus's Z Coating Nano, derived from their scientific microscope optics, addresses the ghosting and flare that typically plague fast lenses shot toward light sources.

The build is PRO series through and through. The barrel is weather-sealed against moisture, dust, and freezing temperatures, which pairs directly with the weatherproof OM-D bodies this lens is designed to complement. At 410g and 87mm long, it is substantial for the system, but the manual focus clutch, customizable L-Fn button, and depth-of-field scale justify the size for working photographers. The MSC inner-focusing mechanism keeps autofocus fast and near-silent during video acquisition, and the 30cm minimum focusing distance opens up close-up work that a standard portrait prime wouldn't permit.

For a Micro Four Thirds shooter who wants a single fast prime they can trust in variable conditions, this is a well-proven answer.

Who It's For

Portrait photographers shooting with Olympus OM-D bodies will get reliable eye-tracking AF and subject separation from the f/1.2 aperture even in mixed indoor light. Documentary and street photographers benefit from the weather sealing and the normal-equivalent focal length that doesn't telegraph intent the way a longer lens does. Videographers running MFT rigs will find the MSC mechanism's near-silent focus pulls usable without a follow-focus unit. Close-up and product shooters can work at 30cm without switching glass, keeping a tight kit on location.

Key Features

• f/1.2 maximum aperture with 19-element, 14-group optical design
• 50mm full-frame equivalent on Micro Four Thirds bodies
• Z Coating Nano reduces ghosting and flare in backlit conditions
• Weatherproof construction with hermetic sealing against moisture and dust
• MSC inner-focusing for fast, silent autofocus during video
• 30cm minimum focus distance for close-up work
• Manual focus clutch with depth-of-field scale
• Customizable L-Fn button on lens barrel

FAQ

What's the field of view equivalent on a full-frame camera?

On Micro Four Thirds, the 2x crop factor makes this 25mm lens equivalent to a 50mm on full-frame, giving you a classic 47-degree normal lens angle of view.

How close can you focus with this lens?

Minimum focusing distance is 30cm (11.81 inches), measured from the sensor plane, which opens up close-up work beyond what a typical portrait prime allows.

Is this lens weather-sealed?

Yes. The barrel is hermetically sealed and rated splashproof, dustproof, and freezeproof, designed to pair with weatherproof OM-D bodies.

How does the autofocus perform during video?

The MSC (Movie and Still Compatible) inner-focusing mechanism delivers fast, smooth, and near-silent focus transitions, which is why it's widely used by MFT videographers.

What coating does Olympus use to control flare?

Z Coating Nano, derived from Olympus microscope optics, combines ZERO (Zuiko Extra-Low Resolution Optical) coating with nanoparticle technology to eliminate ghosting and flare when shooting toward light sources.

Can you switch between autofocus and manual focus quickly?

The manual focus clutch on the focus ring lets you shift between AF and MF instantly, and the depth-of-field scale lets you preset and return to focus positions without autofocus.

What functions can the L-Fn button control?

The customizable Lens Function Button can be programmed for focus peaking, AF stop, magnify, and other camera functions, giving you direct control from the lens barrel.