Olympus M.Zuiko 12-40mm f/2.8 Pro review

The Olympus M.Zuiko 12-40mm f/2.8 Pro is a not so standard zoom for Micro Four Thirds cameras

Best Olympus lenses (OM System): Olympus M.Zuiko 12‑40mm f/2.8 Pro
(Image: © James Artaius)

Digital Camera World Verdict

With an effective zoom range of 24-80mm in full-frame terms, and a fast constant aperture of f/2.8, this is a pro-grade standard zoom lens for Micro Four Cameras. It has a suitably tough, weather-sealed construction, high-end handling characteristics and excellent all-round performance. It’s pretty pricey to buy but the standard of quality throughout makes it good value for money.


  • +

    Fast, constant aperture

  • +

    Excellent build quality

  • +

    Push-pull focus ring


  • -

    Relatively large for an MFT lens

  • -

    Quite pricey

  • -

    Push-pull focus ring

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As a holy trinity lens, the Olympus M.Zuiko 12-40mm f/2.8 Pro (equivalent to a 24-80mm in 35mm terms) comes in at three times the price and four times the weight of the M.Zuiko pancake zoom, which is often sold as a kit lens with Olympus Micro Four Thirds (MFT) cameras. 

Even so, at 382g, the Olympus M.Zuiko 12-40mm f/2.8 Pro is a lot less heavy than most f/2.8 zooms for cameras with larger APS-C format or full-frame image sensors. Indeed, the relatively fast and constant f/2.8 aperture rating makes this lens two f-stops faster than the Olympus M.Zuiko 14-42mm pancake zoom at the long end of the zoom range. 

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Matthew Richards

Matthew Richards is a photographer and journalist who has spent years using and reviewing all manner of photo gear. He is Digital Camera World's principal lens reviewer – and has tested more primes and zooms than most people have had hot dinners! 

His expertise with equipment doesn’t end there, though. He is also an encyclopedia  when it comes to all manner of cameras, camera holsters and bags, flashguns, tripods and heads, printers, papers and inks, and just about anything imaging-related. 

In an earlier life he was a broadcast engineer at the BBC, as well as a former editor of PC Guide.