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Viltrox EF-M2 - EF to M 4/3 Electronic Focal Reducer (Speedbooster) New Low price - $117.75

Discussion in 'Hot Deals - Find a Great Deal? Share It Here.' started by Telonson, Aug 17, 2018.

  1. SteveNunez

    SteveNunez Mu-43 Top Veteran

    510
    Oct 11, 2010
    South Florida
    Steve Nunez
    Can anyone confirm if this would work with a Tamron 150-600 Ef lens?
     
  2. ibd

    ibd Mu-43 Regular

    182
    Jun 5, 2016
    I have just confirmed that the EF-M2 will work with old manual Olympus OM lenses, with a SILVER adapter, on an OLYMPUS OM-D camera, disproving several theories in this thread. ;) 

    I have attached several pictures, including a "proof" picture taken with the above mentioned setup, as well as pictures of the setup itself.

    I think the takeaway message is that with this adapter, everything is (im-)possible, and the only way to confirm your setup works or not is by trying it.

    Latest firmware on all electronic components involved. No taping whatsoever.
     

    Attached Files:

    • Informative Informative x 1
  3. ibd

    ibd Mu-43 Regular

    182
    Jun 5, 2016
    It's not too bad, really. At least it's sharp when stopped down and still fairly lightweight. I found it works nice for landscapes in good sunlight!
    Interestingly, I found a thread by accident where another person has the same problem. I'm linking it here to densify the result network for these keywords :p  : Anyone using ef-m2 with ef-s lenses?
     
    • Like Like x 1
  4. That is encouraging.

    My next investigation is to see if the locking pin is engaging fully. I had problems with early "no name" adapters on the OM-D E-M1.2 that had a locking pocket that was not deep enough, which kept the camera in "dark mode."
    p4049532-jpg.jpg
    Subscribe to see EXIF info for this image (if available)
     
  5. ibd

    ibd Mu-43 Regular

    182
    Jun 5, 2016
    I measured the depth of that hole with a caliper, and it gives me 0.8mm. Of course your camera could have different requirements for it to work, but it seems to be enough for my OM-D E-M10.
     
  6. Kharan

    Kharan Mu-43 Rookie

    18
    Sep 10, 2013
    How much is it stopped down automatically? Just f/5.6, or something worse?
     
  7. ibd

    ibd Mu-43 Regular

    182
    Jun 5, 2016
    At the wide end: The lens is f/4.5 wide open, so with the speed booster it should go to f/3.2 (gain 1 stop). However, It will only open to effective f/4.5 (lens set to f/6.3). You lose exactly 1 stop.
    I don't remember the behavior at the long end, but I think it's exactly the same.

    Note that the lens vignettes ever-so-slightly at the wide end, and the non-vignetting range starts at effective ~8mm. If you have any crop (like in video mode), there's no vignetting.
     
  8. ibd

    ibd Mu-43 Regular

    182
    Jun 5, 2016
  9. ibd

    ibd Mu-43 Regular

    182
    Jun 5, 2016
    My apologies for triple posting, just want to inform all the people affected by it!
    The latest firmware fixes this issue. See here: Anyone using Viltrox ef-m2 with ef-s lenses?
     
    • Like Like x 1
  10. Kharan

    Kharan Mu-43 Rookie

    18
    Sep 10, 2013
    That's great, thanks!
     
  11. FarFromSane

    FarFromSane Mu-43 Regular Subscribing Member

    37
    May 28, 2015
    Ontario,Canada
    I'd like to use it with some long Canon lenses (300, 100-400 etc)
    Ive seen some posts where autofocus has problems with the em1-2.. Has recent firmware fixed it?
     
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