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Thread: 50mm + ec 20

  1. #1
    Member Don Kondra's Avatar
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    50mm + ec 20

    Greetings,

    I've been playing around with the ec 20 (2x teleconverter) on the 50mm lately. Quite pleased with the results.

    Very unscientific test, original image resized for web and a 100% crop.....





    Cheers, Don

  2. #2
    Member Atomic2's Avatar
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    Re: 50mm + ec 20

    so what does that make it, a 100mm F4? (2 stops light difference)
    E-3, E-510
    12-60 2.8-4.0
    40-150 3.5-4.5
    Sigma 30 1.4
    Zenit 58 F2 [with M42 adapter]
    Metz 48

  3. #3
    Member Don Kondra's Avatar
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    Re: 50mm + ec 20

    Basically, yes..

  4. #4
    Member Atomic2's Avatar
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    Re: 50mm + ec 20

    Quote Originally Posted by Don Kondra
    Basically, yes..
    Oddly symmetrical.

    So then no real advantage over the 40-150 3.5-4.5?
    E-3, E-510
    12-60 2.8-4.0
    40-150 3.5-4.5
    Sigma 30 1.4
    Zenit 58 F2 [with M42 adapter]
    Metz 48

  5. #5
    Member Don Kondra's Avatar
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    Re: 50mm + ec 20

    Hmmm... Pretty hard to compare a prime to a zoom but I assume you mean the 40-150mm @ 100mm vs the 50mm + ec 20.

    The obvious difference is the Image Quality, the 50mm is Sharp.

    Then there's the closest focusing distance, .24m for the 50 and .9m for the 40-150.

    This relates to the Maximum Image Magnification. .52x for the 50 and .14x for the 40-150.

    As I understand it, this simply means you can obtain a larger image with the 50mm because your minimum working distance is less.

    I don't own a 40-150 anymore so I can't test it but I would think if you were farther away but zoomed to 150mm the image sizes would be similar.

    Understanding Camera Lenses

    Cheers, Don

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