Metabones Speed Booster for MFT coming in April.


I just have been informed that Metabones will launch the new Speed Booster adapter for MFT in April and not in March as previously reported on their website. They are still not sure what kind of lenses will supported yet but I have been told the adapters will be manually only (no electronic support). Price may be around $399 (still not final decision yet).

Officially the Nikon, Leica R, Contax C/Y, Contarex, ALPA and Rollei lenses are on roadmap plus OM lens adapter may come too. I am pushing Metabones to make an OM adapter as some of these lenses are owned by many 43rumors readers and by me :)

List of OM prime lenses. Click on the link to check the price and auctions on eBay: 21mm f/2.0 and 21mm f/3.5 lens, 24mm f/2.0 and 24mm f/2.8 and 24mm f/3.5 shift lens, 28mm f/2.0 and 28mm f/2.8 and 28mm f/3.5 lens, 35mm f/2.0 and 35mm f/2.8 and 35mm f/2.8 shift lens, 40mm f/2.0 lens, 50mm f/1.2 and 50mm f/1.4 and 50mm f/1.8 and 50mm f/2.0 macro and 50mm f/3.5 lens, 55mm f/3.5 macro lens, 85mm f/2.0 lens, 90mm f/2.0 macro lens, 100mm f/2.0 and 100mm f/2.8 lens, 135mm f/2.8 and 135mm f/3.5 lens, 180mm f/2.0 and 180mm f/2.8 lens, 200mm f/4.0 and 200mm f/5.0 lens, 250mm f/2.0 lens, 300mm f/4.5 lens, 350mm f/2.8 lens,, 400mm f/6.4 lens, 500mm f/8.0 lens, 600mm f/6.6 lens, 1000mm f/11 lens.

  • bitcrusher

    I hope that they come out with a Nikon G adapter as well, here is a post from conurus that makes me think they are working on it. It was posted in march 2012-

    “I spoke with Metabones and they are okay with me publicly saying they are working on Nikon G to NEX. Although it will not be smart and it will have no electronics, this upcoming product will have the best aperture ring available on the market and also a surprise feature that we will let you know later.”

    link here:

  • inis16

    Electronic support means patent problem in MFT?

    • adriaantie

      why would it be a patent problem?

  • Dave

    So how are focus-by-wire lenses going to focus? Will they?

    • Mr. Reeee

      Probably not.
      You’ll be forced to buy real lenses made of metal and glass. ;-)

  • Gabe

    0.71x or 0.5x?

    • adriaantie

      no – it cuts of around 0.9

    • Hubertus Bigend

      0.71x. The optics is slightly different from the E-Mount version, though. Actually, I read it’s even slightly better. They said there wasn’t enough space to construct a 0.5x converter with good image quality, the MFT bodies wouldn’t allow the lens to get close enough to the sensor.

  • Daf46

    If there will be a OM version i’ll be very interested !

  • JF

    ” They are still not sure what kind of lenses will supported yet ”
    launch in april and they don’t know what kind of lens will be supported ? strange…

    • ArtP

      Easy to explain… they have the optics complete, just haven’t finalized which mounts they will go into production with.

  • Rick

    I am still interested in this and the metabones website says the Sigma 17-70 f2.8-4 lens is autofocus compatible. This seems like the dream lens combo for this because it will become a 12-50 f2.0-2.8 lens.

    However, I am very confused because the metabones website says that it does NOT work with APS-C lenses, yet the Sigma 17-70 is an APS-C. Does Sigma make a full frame 17-70 too?

    List of lens compatibility

  • pepit

    i think no OM adapter for patent problems,
    ¿Olympus releases other similar adapter for OM lens?

    • trevor


      Sorry but that is not correct. There is now way a patent could restrict implementation of the OM mount

  • peropia

    i have more 20 manual lens, but not have any Nikon, Leica R, Contax C/Y, Contarex, ALPA and Rollei,
    not adapter for OM, Minolta, m42?

    • Seconded for an M42 adapter, especially if it’s to be manual anyway.

      • make that another one for M42……my Helios 40 is waiting!

        • Newbie Here

          Make it four for M42! :D

          • Harri

            M42 +1

            • Would this work with the passive M43rds mount for the Black Magic Cinema Camera?… Seems like with its ludicrous crop factor this adapter may be the key to making that camera more ideal. I was assuming since its a passive mount then no.

    • Hubertus Bigend

      Minolta SR/MC/MD is what I’m hoping for, too, and on their website Metabones is saying they’re taking it into consideration but have no decision nor timeframe yet. Such a SpeedBooster adapter could actually make me switch from NEX to Micro-FT for using my old lenses. Which would make sense because I’m still primarily using Four Thirds DSLRs which could be adapted, too, even if AF is still not really usable.

      On the other hand, I just might stay with my NEX and use a NEX SpeedBooster for Minolta, if such a thing will appear for NEX, too.

  • Salty

    I’m certainly not interested in paying more for an adapter with really slow AF. If I wanted to super fast AF lenses to work super slow I’d have bought an EOS M…

    Be nice to have a cheaper entirely manual version. For OM lenses.

    OM 100mm F2.8 becomes a 140mm F2 (with 2x crop)?
    OM 85mm F2 becomes 120mm f1.4 f1.4?

    More useable portrait options on MFT.

  • Mr. Reeee

    Hopefully they’ll come out with a Nikon F-mount adaptor.
    I wonder what the thing would do for/to my favorite old Nikon 20mm f2.8 AI-S?

    I’d love to see an M42 adaptor, too.… for my Pentax 50mm f1.4 SMC Takumar.

    • Anonymous

      Just sold my old Nikkor 21mm f2.8 on eBay for $250..
      Bunch more lenses, bodies…
      All the old hassleblads and lenses…
      …and sadly my Contax G2 and 5 lenses…that was painful…but I amjust not using them…but brought in very good money considering…everyone is using digital.

      • Mr. Reeee

        That’s funny, because I’ve actually bought a number of used Nikon AI-S lenses since I got my GH2.

      • Bob B.

        For some reason I waz anonymous above….???? donno why…
        I have to have the AF most of the time…call me lazy….and I am never going back to shooting film..sold all of my view camera lenses too!!!!! This stuff nowadays is too much fun to be bothered with the time and expense…I guess I could see if you were doing some Zone System B&W work and making nice prints in the darkroom…but I had years and year of that…

        • Mr. Reeee

          I do a lot of low-light and night shooting and prefer manual lenses for that. When people complain about AF lenses focus hunting in low-light, go manual, it’s actually quicker and much more precise. I guess I trust my eyes more than a bunch of anonymous algorithms. ;-)

          Besides, I got a few nice Nikon AI-S macro and telephoto lenses for the price of one good M4/3 lens.

  • Wt21

    PLEASE do FD. Nikon would be the most intelligent one, though. Also OM would be good. How many would they do?

    I guess they can’t do m-mount because there’s just not enough depth there?

    • zozio32

      and a K mount to. The smc-m glass will be very well suited to micro 4/3!

  • Vassilios

    The best way to use this for m43 (as long as manual-only focusing isn’t an issue) is to get a Canon EOS adapter and use extra “ring” adapters for other manual lenses. Since EOS has a long flange back distance, it’s easy to attach OM, Minolta, M42 and other manual lenses (this is what I and several people are doing with existing adapters for m43).

    What you gain is lens speed and wider FOV (e.g. a 50mm f/1.4 will be 100mm f/1.4 with existing adapters, but ~70mm f/1.0 with the Metabones).

    I wouldn’t bet too much on AF performance though. Even they seem very concervative about AF speed and warn about it in their website, for the NEX adaptor. So, personally, I don’t mind if the m43 is manual only.

    • Salty

      Good Post. But what would be the total depth of the resulting adapter stack?

      • Vassilios

        If you check, you’ll see that adapters for, e.g., OM—>EOS are thin metal rings. Total length (if I understand the question correctly) is virtually the same. In fact, technically speaking, it increases by a tiny percentage so focus to infinity may be *potentially* compromised, but, in practice, I haven’t found this to be an issue at all.

        If you mean depth of field then there is no change at all, it’s as if you had, say, a OM lens attached to a Canon EOS camera.

        • Salty

          Sorry I’m confused. I thought you were suggesting but a EOS metabones adapter, then a second adapter to allow this to fit MFT, then thin shims for OM etc?

          Because they’re not currently planning to make MFT to EOS metabones.

          • Vassilios

            Sorry for the confusion; yes, I was pointing out that a *potential* future EOS Metabones adapter would be the most “universal” solution.

        • Tron

          Little to no advantage to an EF adapter if electronic aperture control is not going to be supported for MFT. Nikon makes more sense IMO, especially if the Metabones adapter also incorporates a manual aperture control ring for the newest F mount lenses.

  • ArtP

    Don’t know if it would work, but if they came out w a 4/3 to m43 adapter, you could use any of the x to 4/3 adapters and mount a variety of lenses.
    The other thought I had was an Adaptall style mount, where you can swap out the mount to fit different lenses. Not everyone is going to want to spend $400 multiple times if they have a number of different mount lenses.

    Or maybe just get the Canon mount and get X to Canon adapters… OK, that might be the way to go.

    • I brought up an adaptall type mount a couple of weeks ago. It would be far more flexible. The focal reducer on the camera then an adaptall type ring for any lens brand. Probably MF only. But cheaper than buying a metabones for for each of multiple brands.
      I think that putting a 4/3 lens onto a m43 through the metabones will not work as the image circle created would be smaller than the sensor diagonal.

  • I really want to see a Minolta – M4/3 version!

  • Camaman

    Canon FD please…
    It should be more valuable than EF mount anyway.

    Plus on top of that, plastic EOS lenses with no aperture ring and shitty feeling focus rings have NO appeal to me, nor are they precise enough to work with MF.

  • Mojokielbasa

    0.7 boost but don’t forget MFT 2x crop:

    50mm x .7 = 35mm x 2 = 70mm
    F2 x .7 = 1.4 x 2 = f2.8

    • Tulio

      Looks like you didn’t understand the adapter.

    • andrea

      50mm x .7 = 35mm, that is the same field of view of a 70mm lenses on a FF
      F2 x .7 = 1.4

      • Kabuto1138

        Is it x0.7? or x0.71?

    • Grey Owl

      Oh no, not more confusion.

    • zozio32

      nikon is crap because the F mount is very long: you cannot mount anything else on it.

      on a EOS mount, you can add quite a bit, like a K-> EOS, M42 to EOS, or F -> EOS.

      Therefore, a adapter EOS -> MFT is quite generic

      • zozio32

        reply to wrong post, sorry

  • adaptor-or-die

    hope that OM mount is first, or m42, something with a broad choice

  • Rufus

    Why not Canon FD? Push the guys to make an Canon FD Version!!!

    • danish

      Yes! Canon FD!!! You can get tons of used FD glass for little money. Imagine a super sharp 35mm f2 concave with that adapter…

  • Uberzone

    Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD Canon FD

    • bobthewrecker


  • Bob B.

    I would rather just buy the SLR Magic 25mm f/0.95…than own one of these contraptions?

    • Mr. Reeee

      Yeah. If it were some sort of universal adaptor that with many brands of lenses and mounts, it would be MUCH more interesting. As it is, it seems a complex and expensive solution.

      There’s no way of telling how much image degradation there will be.

      • Reggie

        eos and f adapters make the most sense. I would expect this adapter to be most attractive to people that use some other system, with m43 as their compact alternate. I would get it to play with my 14-24 and 70-200 on a m43 body. the 70-200 would be especially interesting.

        • Bob B.

          That is just it…I use my EOS lenses on my 5DIII…why would I put the on an MFT with a wacky adapter, have an extremely unbalanced camera, really bad manual focus and a small sensor for a lens made for the graduer of a big sensor. Just don’t get it.

          • Provided the adapter has the electronic contacts for some fly by wire manual focusing lenses, I am sure the focusing on mirrorless cameras is much easier to do then any dslr using ovf.

      • DPReview has posted a their thoughts and a few charts on the one for NEX. Surprisingly, the optical performance is very good. The only drawback is the minor amount of CA added.

      • Bob B.

        “There’s no way of telling how much image degradation there will be.”
        correct…and its not like this adapter is cheap….but I guess it will float some peoples boat..
        me…I would rather throw another lens in the Lens Draws!!!!!! LOL!

    • for mft photographers who prefer to stay as close to the original dof of the adapted lens, the speedbooster sounds like a great solution. If you just want a fast lens, then sometimes its cheaper to go the native way indeed.

  • stefffon

    no Minolta MD? why!

  • MarcoSartoriPhoto

    I’m waiting for the first photos from early adopters. Off topic, Does some of you own a Zeiss Ikon?

  • OM-4ever

    IMO, First should be the Nikon bayonet, followed by OM, then Canon and Minolta. Alpa mount? Come on, thats as silly as only making mostly silver lenses for a modern camera system…

  • So would this really turn a Nokton 17.5mm ƒ/0.95 into a 12mm ƒ/0.67 lens? Or are there physical limitations as to how much light it can let through?

    • MarcoSartoriPhoto

      It seems limit is f1.0.

  • taran

    The speed booster works, but DOF of 24mm 1.0 m43 is the same as 35mm 1.4 on FF. Don’t make the mistake of thinking you are getting “more” than that.

  • taran

    The speed booster works, but DOF of 24mm 1.0 m43 is the same as 35mm 1.4 on FF. Don’t make the mistake of thinking you are getting “more” than that.

    • you make it sound like its bad lol.

    • you make it sounds like that is a bad thing lol.

  • peropia

    And, to save money, is possible only one Universal Metabones m4/3 adapter,
    and add cheap sub-adapters to different mounts ¿?
    I think this is ideal

  • peropia

    400$ for each legacy mount and not AF, i think very very very expensive.

  • anon

    Leica M to OMD 4/3?

    btw, what will the crop be on a 4/3 when using the speed booster?

    • There is no adapter for M glass as the mount to sensor distance is to short. Pity as I have some good M lenses. Get Leica R and then an eos speedbooster and eos to R adapter.

      • anon

        thanks…would you know what the crop factor will be from Leica R to Speed Booster to OMD?

        • Lens focal length x 0.71 then x2 as usual. But Lens speed is Wide open x 0.71 making it faster than the original. There is a also a maximum aperture of 1 or 1.2 (have a look around on this page) and no further speed benifit applies once that is reached.

          See andrea’s comment above.

          • anon

            much appreciative for the answer!

  • +1 for Canon FD. Just got my 85mm from eBay to complete my almost full set of 20, 28, 35, 50 and 35-105mm.

  • camaman

    FD would be best thatsh for sure. Use Metabones FD – m43 speedbooster on the body and adapt any other lens to the FD mount to use it and speed it up on your speedbooster + body combo.

    Just attach a cheap “xx to FD” adapter on every lens you want and store them lke that in your bag.

    • Anonymous

      Got any links to these xx-to-FD adapters of which you speak? There are FD-to-xx adapters on ENay but I’ve never come across the reverse!

  • It would seem that if one gets the Eos mount adapter speedbooster. Then a whole range of lenses, M42. Minolta, OM, Leica R and others can be used with a cheap ebay eos to xxx adapter. Manual focus only as none of the ebay adapters have AF active components.

    • Would seem camaman and I share the same idea. Good man camaman great idea.

  • Twaddler Belafonte

    Such a cool product. I look forward to seeing detailed reviews for this.

  • Daan Gray

    Why the feck is everyone talking about DIFFERENT MOUNTS when this is about MICRO FOUR THIRDS YOU DUNCES!!

    • You may have noted that adapters have a different mount at each end. The one that goes on the camera and at the other end is the mount of lens you wish to use.
      So it is appropriate that people are talking about many lens mounts in this topic.
      As the M43 Speedbooster is not in production, but I believe the Nex version is, it is also possible people will talk about that version as a comparison.

      • Daan Gray

        Yes but its boring

        • If its so boring then why bother with it?

    • Adriaantie

      You FAIL at life

    • Anonymous

      LOL that you don’t realize what an idiot you just made of youself!

  • “I have been told the adapters will be manually only (no electronic support).”

    No electronic support is a big disappointment. Many interesting APS-C lenses have electronic aperture control. F2.8 zooms first come to mind, but there is also Sigma 20mm F1.8 which would be equivalent 28mm F1.2 on m4/3 with the Speed Booster. After no EVF on E-P5, this is another bad news from MFT this week.

    • Ulli

      I thought the Sigma 20mm 1.8 is 24×36 format, you mean the EX version right?

      • You’re right, Sigma 20mm F1.8 is a FF lens. Anyway, it would be eq. 28mm F1.2 on MFT, sharper and with blurry corners cropped.

  • zuzullo

    Can we fit native m43 lens as well?
    What is the focal on the Olympus 12mm f2?

    • Adriaantie


      • Very precise, very simple, very correct answer.
        But a bit like an auditor. Tells you its wrong but not why, how or what can be done about it.
        So Zuzullo if you found a way of putting a M43 lens on the front of the adapter you would end up with an image circle that would not cover the sensor.

        But there again it would be very sharp and faster. However when you crop it and make it m43 size again you tend lose any advantage.

        • zuzullo

          What is the fastest ultra-wide angle combo then? :)I want one of those!

          • Only you can answer that. Look around and make your choice. just try some web searches.

            • zuzullo

              1 – Each brand of lens require a specific Metabones product, right?
              2 – Which one are they lunching for MTF? Do we know that yet?

              Thanks in advance?

  • Add +100 for Canon FD/ new FD!

    Rollei? ALPA? Contarex?????? are you Metabone crazy? who will buy it?

    canon FD, Nikon F and Olympus OM (yes, admin is right. for m4/3 user, OM lens is popular, as you know)
    and, Pentax K, Minolta MD.

    I always thinkg about mount adapter makers hearing their release plan or products, They don’t research market share or user profile?

  • note, FD mount is one of the shortest flange back mount.
    So there is no way like FD -> xx mount adapter + XX – m4/3 speed booster.
    if such mount adapter (xx – m4/3 speed booster,

  • James70094

    I would wish for them to make an adapter for the Pen f lenses. Smaller than than film/FF lenses. This would make a good combination.

    • I also would like this. But with the system metabones make it is unfortunately not possible. The distance from mount flange to sensor is to short. Same problem with M lenses.
      It would seem that one reducer fits all, but fits few. Maybe a longer adapter with a redesigned reducer some day, but not yet.

      • James70094

        Just a wish. I still have my Pen F to m4/3 adapter.

  • Willy

    So if I buy a 200mm f/2.8 lens (Canon has one for $820) and add a Metabones adapter, this would become a 140mm f/2 lens. Is this correct?

    This would be much cheaper and smaller than the Olympus FT 150mm f/2. I doubt the image quality would be as good, but good enough? for less than 1/2 the price and a smaller package?

    • original focal length times 0.71 then times the crop, 2 for m43 or 1.6 for APSC.
      Crop has nothing to do with fstop so it is max f stop times 0.71. But limits do apply go to metabones to see, its not difficult to find them.

  • baov

    the amount of physics fail in this thread is staggering

  • Everyone want the adapter for the lenses they have the most of… for me that is K-mount, so I can use all the great Pentax lenses AND use M42 with a cheap (second) adapter I already own.

    Pentax K-mount to MFT please!

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