Olympus M.Zuiko Digital ED 12-40mm f/2.8 PRO Lens
The Olympus 12-40mm f/2.8 ED 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 Digital ED 12-40mm f/2.8 PRO Lens
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Lens Overview — Olympus 12-40mm f/2.8 ED PRO
Key Features — Olympus 12-40mm f/2.8 ED PRO
12-40mm f/2.8 Constant Aperture: Maintains a fixed f/2.8 maximum aperture throughout the zoom range, giving consistent exposure and depth-of-field control at any focal length.
24-80mm Full-Frame Equivalent: The MFT crop factor yields a 24-80mm equivalent range, covering wide-angle through short telephoto for versatile everyday shooting.
Micro Four Thirds Mount: Compatible with the full range of MFT mirrorless bodies from Olympus and Panasonic.
Autofocus with Manual Override: Supports both autofocus and manual focus modes, allowing shooters to switch between acquisition methods as the situation demands.
Weather-Sealed Construction: Dust, splash, and freeze-proof sealing allows reliable use in rain, dust, and cold conditions down to -10°C.
Compact 382g Build: At 382g, the lens is notably lighter than equivalent constant f/2.8 zooms in larger formats, keeping the overall kit portable.
Lens Specifications — Olympus 12-40mm f/2.8 ED PRO
| Spec | Detail |
|---|---|
| Use Cases | Landscape, Travel, Portrait, Architecture, Product |
| 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 12-40mm f/2.8 ED PRO
The Olympus M.Zuiko Digital ED 12-40mm f/2.8 PRO is a Micro Four Thirds standard zoom lens designed for mirrorless camera bodies. Its 12–40mm focal length range places it firmly in standard zoom territory, making it a practical all-rounder for photographers who need one lens to handle a variety of scenarios. The standout specification is its constant f/2.8 maximum aperture, which holds steady across the entire zoom range — a meaningful advantage for maintaining consistent exposure and creative control.
Both autofocus and manual focus are supported, giving users versatility in how they acquire and fine-tune focus. The 62mm filter thread accepts a broad range of widely available filters. Weighing 382g, it is manageable for extended use without being ultralight.
One important note for prospective buyers: this lens carries no built-in image stabilization, so photographers shooting in challenging conditions will need to rely on their camera body for that functionality. The Micro Four Thirds mount ensures compatibility across the MFT mirrorless system.
Pros — Olympus 12-40mm f/2.8 ED PRO
- ✓Constant f/2.8 maximum aperture across the full 12–40mm zoom range
- ✓Covers a versatile standard zoom focal length range (12mm to 40mm) suited to a wide variety of subjects
- ✓Supports both autofocus and manual focus modes
Cons — Olympus 12-40mm f/2.8 ED PRO
- ✗No image stabilization built into the lens — stabilization depends entirely on the camera body
- ✗The 12–40mm focal length range is limited at the long end compared to some standard zooms
- ✗At 382g, it adds meaningful weight to smaller MFT bodies