The Olympus M.Zuiko Digital ED 12-40mm f/2.8 PRO is an Olympus 12–40mm zoom for Micro Four Thirds, released in 2013. It covers 24–80mm in full-frame terms at a maximum aperture of f/2.8. It offers weather sealing and a 382g build.
Best for: Everyday zoom covering wide to short telephoto
Pros
- Constant f/2.8 aperture throughout the zoom range
- Weather sealed for outdoor and adverse conditions
- Wide starting focal length at 24mm equivalent
Cons
- Higher price than entry-level alternatives
What this lens is good for
Everyday and walkaround
The original PRO standard zoom, a 24-80mm full-frame equivalent at constant f/2.8 that remains one of the best-value professional zooms on the used and new market. It is sharp corner to corner, weather sealed, and focuses close for casual macro. The PRO II adds little optically, so this version is often the smarter buy.
Events and travel
The constant f/2.8 aperture, fast autofocus, and sealing make it a dependable event and travel lens that holds exposure through the zoom range and works in poor light and weather. The strong close-focus performance adds near-macro flexibility for a single-lens kit. Full guide →
Specifications
| Lens | |
| Brand | M.Zuiko |
| Type | zoom |
| Status | current |
| Released | 2013-11 |
| Mount | mft |
| Optics | |
| Focal length | 12-40mm |
| FF equivalent | 24-80mm |
| Max aperture | f/2.8 |
| Min aperture | f/22 |
| Aperture blades | 7 |
| Elements / Groups | 14 / 9 |
| Focus | |
| Autofocus | MSC |
| MF override | Yes |
| Min focus distance | 0.2m |
| Max magnification | 0.3x |
| Stabilisation | |
| OIS | No |
| Dual IS compatible | No |
| Physical | |
| Weather sealed | Yes |
| Filter size | 62mm |
| Weight | 382g |
| Dimensions | 84mm length x 69.9mm diameter |
| Pricing | |
| Price (approx.) | $799 USD |