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Canon Developing Its Own EF-M Speed Booster

Discussion in 'Other Cameras' started by Alex Cremers, Dec 5, 2018.

  1. Alex Cremers

    Alex Cremers Premium Member

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  2. robert

    robert Administrator Staff Member

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    That’s very interesting and certainly helps validate the speed booster concept when a major player jumps in. But it appears the writer doesn’t appear to know how they work as there is no way an 85/1.2 EF will work on the EOS R with a speed booster except in crop mode, and then what’s the point?
     
  3. Christop82

    Christop82 Well-Known Member

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    I've questioned why olympus or Panasonic haven't already done this. Perhaps Panasonic will produce an L to m43 speedbooster to help sell their new lenses.
     
  4. pointreyes

    pointreyes Premium Member

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    LOL. Good catch.
    The only speedbooster that I'm aware of for the 36mm x 24mm sensor cameras is the Medium Format speedboosters.
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  5. Alex Cremers

    Alex Cremers Premium Member

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    I don't think I understand what you mean. The point it to use that 85mm EF lens on a EF-M mount (like the EOS M50) without changing it into a 130mm.
     
  6. robert

    robert Administrator Staff Member

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    I was referring to the last sentence:

    "The prospect of turning the Canon EF 85mm f/1.2 into something resembling an f/0.95 lens might further entice users to jump to the EOS R… "
     
  7. Christop82

    Christop82 Well-Known Member

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    Speedboosters don't speed up FF lenses when adapting to FF body. A boosted EF Lens wouldn't cover the sensor of the eos-R body.
     
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  8. Alex Cremers

    Alex Cremers Premium Member

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    But Canon's speed booster is not for FF bodies, it's for their APS-C line.
     
    Last edited: Dec 6, 2018
  9. robert

    robert Administrator Staff Member

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    Exactly. So why did the writer refer to the EOS R line in the last sentence?
     
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  10. Alex Cremers

    Alex Cremers Premium Member

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    I think he's hoping that Canon would come with an innovating adapter that could pull this off. But yeah, it doesn't make sense.
     
  11. robert

    robert Administrator Staff Member

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    No way that will work (that is, the 85mm EF with a speedbooster on the R) except in crop mode as I mentioned earlier, clearly the writer is lacking knowledge about these.

    :)
     

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