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Olympus MMF-3 Micro Four Thirds Adapter for Four Thirds Lenses

by Olympus
4.4 out of 5 stars  See all reviews (7 customer reviews)
RRP: 179.99
Price: 159.00 & FREE Delivery in the UK. Details
You Save: 20.99 (12%)
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  • Genuine Olympus accessory
  • Adapter to connect Four Thirds lenses to the Micro Four Thirds Mount
  • Dust & splashproof

Frequently Bought Together

Olympus MMF-3 Micro Four Thirds Adapter for Four Thirds Lenses + Olympus BLN-1 Li-ion Battery for E-M5 + Expert Shield - THE Crystal Clear Screen Protector for: Olympus OM-D, OMD E5, E-M1, EM1, E-M10 & EM10 *Lifetime Guarantee*
Price For All Three: 219.85

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Product details

  • Product Dimensions: 9.1 x 9.7 x 5.1 cm
  • Boxed-product Weight: 454 g
  • Item model number: V3230500W000
  • ASIN: B0073A1EBE
  • Date first available at Amazon.co.uk: 12 Jun 2012
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (7 customer reviews)

Product Description

Product Description

With the Olympus MMF-3 Four Thirds lenses can be connected to the outstandingly small Micro Four Thirds mount. Now also being dust and splash-proof the MMF-3 is peorfect for the E-M5 and pro or top pro Four Thirds lenses, which are also dust and splash-proof and therefore perfect for all weather conditions. It is possible to use the whole range of Four Thirds lenses with a Micro Four Thirds body* and this only with an adapter with a weight of 42g. *If a ZUIKO DIGITAL lens is used, which is incompatible to high-speed contrast AF it is recommended to shoot in the "S-AF+MF" mode and adjust if it is necessary.

Box Contains

Olympus MMF-3

Customer Questions & Answers

Customer Reviews

4.4 out of 5 stars
4.4 out of 5 stars
Most Helpful Customer Reviews
5 of 5 people found the following review helpful
By daved
I recently got the MMF-3 and, having already had a Viltrox JY-43F for some time with less than spectacular results, I thought I'd compare the two parts.
The biggest problem I had with the Viltrox was corner sharpness and in particular with wideangle lenses, where the corners were, frankly, appalling.
I measured the MMF-3 to be a consistent 19.2mm (front flange to rear flange) all round (as you'd expect). The Viltrox I measured to be 18.7 to 18.8mm. In other words, the Viltrox is both undersize and positions the lens at a slight angle. The undersizng is probably not so important because the lens will simply focus where it needs to and undersizing will guarantee focus to infinity. That said, half a millimeter undersize is a bit dramatic...
So, despite the Viltrox being just about twice the weight of the MMF-3, I would suggest that in the long run any of the OEM adapters will be better vslue than the 3rd party devices. You might get a good alternative but equally you might not, and that's what you pay the extra for.
For clarification, the flanges on the MMF-3 are metal as far as I can tell (some people think they are painted plastic) and the core seems to be some kind of plastic (a foam of some type, maybe carbon fibre) which is very light but does seem plenty strong enough even for my 50-200mm. The outer shell is plastic and the release button is much nicer in operation than the Viltrox, which feels a bit spongy. Without caps, the MMF-3 weighs just 42g whereas the Viltrox JY-43-F weighs exactly double at 84g.
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5 of 5 people found the following review helpful
5.0 out of 5 stars Don't Believe the Criticism 10 July 2013
Verified Purchase
This may seem very expensive for a plastic and metal "spacer" and it probably is but the precision is very important if you are sharing four thirds lenses between an Olympus DSLR and a Pen Micro Four Thirds camera. I bought this to use 11-22, 14-42, 35mm macro and 70-300 lenses on my E620 and E-PM2 and it works with the precise feel that good engineering and tight tolerances give you - that costs.

Don't be alarmed by reports that auto focus is "painfully slow" when using four thirds lenses on a micro four thirds. My lenses perform better on my PM2 than they did in "live mode" on the E620, although native lenses may be quicker. Unless you are into really high speed shooting, you won't notice.

However, it is critical to update the firmware on your lenses if necessary - through the Olympus site. Makes a big difference.

With updated firmware a lens that works well in live view mode on your DSLR will be fine on micro four-thirds - and what wonderful lenses they are too!
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2 of 2 people found the following review helpful
Verified Purchase
Bought this for my Olympus OM-D so that I could use it with the Olympus 35mm macro lens. It's solidly made, with a metal mount, and clicks easily into the camera body by matching the red dots on the camera and the adapter. It was also very quick and simple to attach the lens to the adapter using the same system of aligning dots.

There is an alternative less expensive adapter made by Viltrox but, while this is cheaper than the MMF-3, it's also heavier. I've also read some mixed reviews of the Viltrox adapter. Apparently there are issues with the fit on some MFT cameras. I eventually decided, for peace of mind, to buy the more expensive MMF-3 with the assurance that it would definitely fit any Olympus or MFT camera. The combination works well and, so far, I'm happy with my purchase.
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5.0 out of 5 stars Keep using those 4/3 lenses 20 Aug 2014
By Dave
very useful accessory if migrating to m4/3 cameras for 4/3.
Preserves autofocus and auto aperture functions, and weatherproof capabilities of your lenses.

I have used this on EM1 and EM5 cameras, mainly with 14-54II and 55-200 lenses. Autofocus on the m4/3 is perfectly fast, particularly on the EM1 and plenty usable on the EM5.

The black finish makes the adapter discreet and seems to match the lenses and my cameras.

I have also used this with the 11-22 4/3 lens, this lens does not support contrast detect autofocussing used on the m4/3 cameras. As a result the focussing is not fast, although it is still fine for landscape and posed shots. I'd avoid for sports/candid photography.
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