Olympus M.Zuiko ED 12-40mm f/2.8 PRO Lens
The Olympus ED 12-40mm f/2.8 PRO is a 12–40mm f/2.8 lens designed for Micro Four Thirds mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Olympus M.Zuiko ED 12-40mm f/2.8 PRO Lens
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Lens Overview — Olympus ED 12-40mm f/2.8 PRO
Key Features — Olympus ED 12-40mm f/2.8 PRO
Constant f/2.8 Aperture: Maintains f/2.8 throughout the entire zoom range, keeping exposure settings consistent without adjustment as you reframe.
24-80mm Full-Frame Equivalent: The 12-40mm range translates to a 24-80mm equivalent on Micro Four Thirds, covering wide-angle through short telephoto in one lens.
Micro Four Thirds Mount: Designed exclusively for the MFT mirrorless ecosystem, compatible with Olympus OM-D, PEN, and Panasonic Lumix G-series bodies.
Autofocus & Manual Focus: Supports both AF and MF modes, with a clutch mechanism that allows quick switching between the two without diving into menus.
Weather-Sealed Construction: Dust, splash, and freeze-proof construction makes it suitable for outdoor shooting in rain, dust, or cold conditions down to -10°C.
Close Focus Capability: Minimum focusing distance of 20cm at the wide end allows for close-up shots with strong subject separation.
Lens Specifications — Olympus ED 12-40mm f/2.8 PRO
| Spec | Detail |
|---|---|
| Use Cases | Travel, Studio |
| Lens Type | Zoom |
| Format | Micro Four Thirds (MFT) |
| Zoom/Prime | Zoom |
| Focal Length | 12–40mm |
| Maximum Aperture | f/2.8 |
| Camera System | Mirrorless |
| Lens Mount | Micro Four Thirds |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 62mm |
Description — Olympus ED 12-40mm f/2.8 PRO
The Olympus M.Zuiko 12-40mm f/2.8 PRO is a standard zoom lens designed specifically for the Micro Four Thirds mirrorless system. It covers a focal length range of 12mm to 40mm and maintains a constant maximum aperture of f/2.8 throughout the entire zoom, ensuring consistent exposure and depth-of-field control regardless of focal length. Both autofocus and manual focus are supported, giving photographers flexibility across different shooting styles and subjects.
The 62mm filter thread allows for straightforward use of popular filter types. Weighing in at 382 grams, the lens keeps the overall kit weight manageable. Note that image stabilization is listed as 'None' in the specifications, so photographers relying on stabilization should ensure their camera body provides that capability.
The lens mounts on Micro Four Thirds bodies exclusively, making it a dedicated option for that system.
Pros — Olympus ED 12-40mm f/2.8 PRO
- ✓Constant f/2.8 maximum aperture across the full 12-40mm zoom range provides consistent exposure settings
- ✓Supports both autofocus and manual focus, offering shooting flexibility
- ✓Standard zoom focal length range (12-40mm) covers a versatile spread of perspectives
Cons — Olympus ED 12-40mm f/2.8 PRO
- ✗No built-in image stabilization (specifications list imageStabilization as 'None'), so stabilization depends entirely on the camera body
- ✗Micro Four Thirds-only mount limits compatibility to that specific system
- ✗Specifications do not confirm weather sealing, so environmental protection cannot be verified from available data
Reviews — Olympus ED 12-40mm f/2.8 PRO
Videos — Olympus ED 12-40mm f/2.8 PRO
BEST standard zoom for Pros - Olympus M.Zuiko 12-40mm f2.8 - Red35 Review — Jimmy Cheng (RED35)









