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Thread: METABONES | Speed Booster

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    METABONES | Speed Booster

    The adaptor that claims to make your lens, faster, wider and better!! This is NOT an April’s Fool! | Philip Bloom

    An adaptor that turns your current Canon/ Nikon glass (no EF-S or DX) and makes them faster, wide and better optically

    Any body know anything about this magical piece of equipment?

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    Member StephenPatterson's Avatar
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    Re: METABONES | Speed Booster

    Quote Originally Posted by clark666 View Post

    Any body know anything about this magical piece of equipment?
    Other than it defies the laws of physics?

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    Senior Member Amin's Avatar
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    Re: METABONES | Speed Booster

    This concept has been done before. For example, the very early Nikon E series DSLR, co-developed with Fuji, used a 4X focal reducer to get the full angle of view and light collecting power of full frame lenses condensed to a 2/3" sensor: Nikon E series - Wikipedia, the free encyclopedia

    Adapters serving this purpose are also used in astronomy, where they may be referred to as focal reducers or telecompressors.

    Kodak has a 1994 patent which describes a device similar to the one Metabones is introducing: United States Patent: 5499069

    The main problem has always been optical aberrations at low f-numbers. Perhaps that's why we're seeing this as a product geared towards videographers.

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    Super Duper
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    Re: METABONES | Speed Booster

    It's just a reverse tele converter, so to speak.

    But quite cool, actually.

    Trying to figure how depth of field is affected.

    For example, the rule of thumb for adapting a lens to micro 4/3 is multiply the focal length and aperture by 2, to get the effective focal length and the effective DOF equivalent.

    So, 50/2 becomes 100/2 with an effective DOF of f/4.

    What would effective DOF be of an 'equivalent' 35/1.2, which is otherwise a native 50/1.8 (as shown in the graphic?)

    After a bit of thought on a Sunday night after two football games, I'm assuming that adding a reducer is equivalent to mounting a native 35/1.2 to which means just multiply the 'reduced' f-stop by crop factor to get the effective DOF.

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    Senior Member Amin's Avatar
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    Re: METABONES | Speed Booster

    Yes, same DOF as a native 35/1.2 on NEX or a 50/1.8 on full frame.

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    Senior Member Rawfa's Avatar
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    Re: METABONES | Speed Booster

    Well well, it turns out its no hype...and from the samples Ive seen its the real deal. The samples with the NEX cameras are really great. Im counting the minutes to turn my NEX7 into a FF (ish) camera and still gain 1 stop of light.

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    Administrator Bob's Avatar
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    Re: METABONES | Speed Booster

    Folks, please cool your rhetoric.
    This is hardly professional.
    -bob

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    Sr. Administrator Jack's Avatar
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    Re: METABONES | Speed Booster

    Quote Originally Posted by StephenPatterson View Post
    Other than it defies the laws of physics?
    You need to brush up on your physics. It is you who are on the wrong path. As such, I'm deleting all of your spurious comments below and giving you a stern warning to do some research before going off uninformed on something you clearly do not understand. Consider this a warning, any more of your churlish and rude behavior and I will ban you permanently.

    PS: Bob beat me to the deletions by a few seconds, but my warning to Stephen stands. Vivek, your posts were deleted because they quoted Stephen's, no issues with the way you were responding.
    Jack
    home: www.getdpi.com

    "Perfection is not attainable. But if we chase perfection, we can catch excellence."

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    New Member slothead's Avatar
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    Re: METABONES | Speed Booster

    My only problem with it (and please pardon my first ignorant post) is that you are going to lose your AF (are you not). One of the advantages of a fast lens is an improved AF speed. That is not an advantage with the Speed Booster. Please correct me if I am wrong.
    Tom
    Cameras: Nikon, Olympus
    Lenses: Nikon, Olympus, Panasonic, Sigma, Voigtlander

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