Olympus M.Zuiko Digital ED 12-40mm F2.8 PRO Lens (Micro Four Thirds)

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Key Features

  • 12-40mm focal length
  • 24-80mm equivalent focal length on Micro Four Thirds cameras
  • F2.8 maximum aperture; F22 minimum
  • Stepper motor AF with full-time manual
  • Manual Focus Clutch mechanism
  • 62mm filters
  • Micro Four Thirds mount for Micro Four Thirds interchangeable lens cameras

Product Description

The M.Zuiko Digital ED 12-40mm F2.8 is the first lens in Olympus's 'PRO' lens line for Micro Four Thirds, and designed to match the top-end OM-D E-M1. It offers a 24-80mm equivalent range, and is dust-, splash- and freeze-proof. It uses a focus clutch design similar to the 12mm F2 and 17mm F2.8 primes, so pulling the focus ring back towards the camera engages manual focus mode and reveals a distance scale. The lens also has a L.Fn button, whose function can be assigned from the camera.


Principal specifications
Lens type Zoom lens
Max Format size FourThirds
Focal length 12–40 mm
Image stabilisation No
Lens mount Micro Four Thirds
Maximum aperture F2.8
Minimum aperture F22.0
Number of diaphragm blades 7
Aperture notes Circular diaphragm
Elements 14
Groups 9
Special elements / coatings 1 aspherical element, 1 dual-sided aspherical element, 2 ED glass elements, 2 HR glass elements, 1 EDA glass element, 1 HD glass element
Minimum focus 0.20 m (7.87)
Maximum magnification 0.3×
Autofocus Yes
Motor type Stepper motor
Full time manual Yes
Focus method Internal
Focus notes Manual Focus Clutch mechanism
Distance scale Yes
DoF scale No
Weight 382 g (0.84 lb)
Diameter 70 mm (2.75)
Length 84 mm (3.31)
Sealing Yes
Zoom method Rotary (extending)
Filter thread 62 mm
Filter notes Does not rotate on focusing
Hood supplied Yes
Hood product code LH66


User Reviews

4.71579 out of 5 stars
  • Michael Jardine, Jan 13, 2014 GMT:
    My favorite lens ever

    This doesn't mean it's the 'best' lens ever. It's just my favorite because it provides me exactly what I want with the E-M1:  an excellent walk-around lens that allows me to take this camera into virtually ANY situation, and get GREAT pictures.  And that's why I invested in M43 in the first place.   I have other lens/camera combinations for other situations:  for unobtrusiveness, the Olympus E-PL5 with Panasonic 20mm f/1.7 is great and, in my opinion, a far better choice than the current hot ...

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  • Jan Morgils, Jan 24, 2014 GMT:

    Pro: Is takes very sharp pictures. Great image quality. It has a very nice zoom range. Change to manual focusing by sliding focus ring. Programable function button. It feels very solid. It's weather sealed Con: No syncronisation between the manual focusing ring and the focusing system inside the camera. Putting the focus ring on infinity don't´make the camera focusing on infinity automatically. (And not having focus peeking on a E-M5 dosn't make that better - will we ever have a software ...

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  • photohounds, Feb 5, 2014 GMT:
    Olympus M.Zuiko Digital ED 12-40mm 1:2.8 PRO Lens - no hesitation needed.

    I bought the 12-40/2.8 with the EM-1 I have a swag of MFT Zuikos that carried over from the EM-5 to my EM-1 and this lens is very satisfying in every respect. Smooth, robust and SEALED. It comes with a hood and a pinch lens cap that does NOT fall off when you push on its edge as many others do. There's a metal ring protecting the pinch buttons and that super mechanical focus ring for zone focus devotees. Nice touch. I note that the 12-40 costs the same as the "full marketing frame" 55/1.8 ...

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  • OlympusTog, Mar 10, 2014 GMT:
    So sharp, you'll cut yourself!

    Having used L series lenses for several years, I was a bit apprehensive on moving to M43 lenses but this little beauty has allayed my apprehension - this lens is on a par with my 24-105L but a full one stop faster but absolutely pin sharp even wide open. I was astounded by the results.

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DPReview's Richard Butler discusses the features of the Olympus M Zuiko Digital ED 12-40mm f/2.8 Pro Lens

Olympus M Zuiko Digital ED 12-40mm f/2.8 Pro Interchangeable Lens

Questions & Answers


I'm in Singapore and everything is SOOOO much cheaper, what to buy?

Currently in Singapore 11 weeks into 30 week travels and have been waiting to get here to buy some new gear.  What I've found, and really, really want the Olympus 12-40 f2.8 PRO & Olympus 25 f1.8, which will cost me around £800 (12-40 on its own in UK costs £900).  To (partly) fund the new lenses I plan to sell my Olympus 12-50 and Pamasonic 14 f2.5. However, after a few questions in the shop (and with a massive grin on my face) I found out that if I buy the 12-40 as a kit on a new E-M5 or E-M1 the lens would be cheaper, obviously, but I would also save so much money on another body, dilemma! So, the question is, do I buy the two lenses and save myself about £500, or do I buy the E-M5 kit and 25mm and save around £600, or the E-M1 and 25mm and save £800? I'm not sure if I NEED another body, and I don't really have the money to warrant spending so much, if I buy one of the bodies I'll sell my E-PL3 and I have some other things I could sell, when I get home in 5 months that is. So is ...

ajmoore7 asked
9 months ago


I'm pretty conservative when it comes to money.  So spending money I can't really afford, to buy products I don't really need, just because I spot a 'deal', seems illogical to me. Now if I expected to make a profit selling stuff later that might be different.  But I bet when you factor in the import costs to your home country, the savings aren't as great as they seem right now, so even the expected profit from a quick resale might prove illusory. My advise is buy what you need and use the extra money you might have spent on gear for some sight seeing/photo trips and you might not have spent money on otherwise. Modern photo gear lasts 5 years, if we're lucky.  But our memories (and the photos we make) will last as long as we do! Continue Reading

Glen Barrington answered
9 months ago

I think you shld just go ahead and buy both lenses rather than buy another body with it. Continue Reading

Undergrd answered
9 months ago

Lenses are always the best investment. You're not saving money by buying a camera body you don't need, surely! So I would buy the lenses only. But, if you were to buy another body, I would reccomend the E-M1. You gain features you don't have (better EVF, PDAF, focus peaking, better grip) in a body that will better balance the 12-40/2.8. Don't underestimate the value of PDAF if you ever want to photograph wildlife or sport. And the E-M1 uses the same batteries as the E-M5. Do you use video at all? The E-M1 has a video teleconverter, that turns a 25/1.8 into a 100/1.8. It's an amazing feature to have for low light video of a performance. But, personally, I don't travel with a back-up body. And you already have one. And you can't sell your extras until you get home. So any extra money you spend now, is money you can't spend while travelling. If you are in Singapore for a while, there is an excellent local photography forum called Clubsnap. They will happily help you find the best deal, ... Continue Reading

DonTom answered
9 months ago


weather sealed compact camera

good day...i am planning to get a good weather sealed compact camera i am choosing from Olympus E-M1 or E-M5...can you help me which is better...and does m.zuiko digital ED 12-40mm f/2.8  pro lens fits to both of the camera...thanks

MJroldan asked
3 months ago


That lens works with any M43 camera body - and ensures a WR seal with the E-M1 or E-M5. The M5 has a pretty good track record for sealing but the M1 takes it up another notch. At a price of course and increase in size & weight. Good reviews on both at ming thein's web site: E-M5 review E-M1 review Great picture too: Quote: 10 minutes under a hot shower while powered on, sitting in about 1cm of standing water. All whilst intermittently shooting a frame or two, and no ill effects whatsoever afterwards. Impressive, to say the least. Continue Reading

wolfie answered
3 months ago

.. sorry couldn't resist! :-) Continue Reading

vin 13 answered
3 months ago

Very funny, :-D I have one. It really is quite good value as a camera that is better than nothing in the pouring wet. Good fun, especially if you have kids or a totally inept and clumsy partner who throws things around without a care in the world. It has its place, but obviously not with the OP. Not unless he has one of the above and gets it as a third or fourth camera. I bought mine on the hop en-route to a festival where heavy rain was forecast. It turned out that it was sunny all three days and it wasn't used. It has taken about 50 images in three months and they are OK. Only OK by today's standards. Continue Reading

Aberaeron answered
3 months ago


E-M10 stuck in Manual Focus

I have an E-M10 with 12-40mm Pro Lens. It is stuck in Manual Focus, the option highlights on the menu screen but when I turn the front dial nothing happens. I have reset to factory settings and turned on and off. Can anyone suggest what I am doing wrong ?

JohnnyOldBoy asked
1 month ago


Check the focus clutch on the lens. You probably pulled it back, which locks it into manual focus. Bruce Continue Reading

DrummerBL answered
1 month ago

Thanks DrummerBL. That solved it. Continue Reading

JohnnyOldBoy answered
1 month ago

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